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// Set up the image files to be used.
var theImages = new Array()
var theCaptions = new Array() // do not change this
// To add more image files, continue with the
// pattern below, adding to the array. Rememeber
// to increment the theImages[x] index!

theImages[0] = '<a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20Dolan,%20R.%2022ct" class="links"><img src="images/CmainImage_dr000022.jpg" alt="Cape Hatteras National Seashore, North Carolina. Sandbag seawall which was constructed at the base of the Cape Hatteras lighthouse. This seawall was destroyed by wave action soon after it was completed. 1971. Figure 64. U.S. Geological Survey Professional Paper 1177-B."></a>'
theCaptions[0] = 'Cape Hatteras National Seashore, North Carolina. Sandbag seawall which was constructed at the base of the Cape Hatteras lighthouse. This seawall was destroyed by wave action soon after it was completed. 1971. Figure 64, U.S. Geological Survey <a href="http://pubs.er.usgs.gov/usgspubs/index.jsp?jboEventVo=PubResultView&jboEvent=Search&view=adv&pxfield_series=PP&pxfield_rpt_year=&pxfield_rpt_seq=1177&pxorderby=0&performSearch=Search+Now" class="links">Professional Paper 1177-B</a>. ID. <a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20Dolan,%20R.%2022ct" class="links">Dolan, R. 22ct</a><br>'

theImages[1] = '<a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20Dolan,%20R.%2022ct" class="links"><img src="images/CmainImage_dr000022.jpg" alt="Cape Hatteras National Seashore, North Carolina. Sandbag seawall which was constructed at the base of the Cape Hatteras lighthouse. This seawall was destroyed by wave action soon after it was completed. 1971. Figure 64. U.S. Geological Survey Professional Paper 1177-B."></a>'
theCaptions[1] = 'Cape Hatteras National Seashore, North Carolina. Sandbag seawall which was constructed at the base of the Cape Hatteras lighthouse. This seawall was destroyed by wave action soon after it was completed. 1971. Figure 64, U.S. Geological Survey <a href="http://pubs.er.usgs.gov/usgspubs/index.jsp?jboEventVo=PubResultView&jboEvent=Search&view=adv&pxfield_series=PP&pxfield_rpt_year=&pxfield_rpt_seq=1177&pxorderby=0&performSearch=Search+Now" class="links">Professional Paper 1177-B</a>. ID. <a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20Dolan,%20R.%2022ct" class="links">Dolan, R. 22ct</a><br>'

theImages[2] = '<a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20Gaskill,%20D.L.%20%20356ct" class="links"><img src="images/CmainImage_gdl00356.jpg" alt="Grand Teton National Park. View to southeast from Lake Solitude. Teton County. Wyoming. July 1951."></a>'
theCaptions[2] = 'Grand Teton National Park. View to southeast from Lake Solitude. Teton County. Wyoming. July 1951. ID. <a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20Gaskill,%20D.L.%20%20356ct" class="links">Gaskill, D.L. 356ct</a><br>'

theImages[3] = '<a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20Gaskill,%20D.L.%20%20393ct" class="links"><img src="images/CmainImage_gdl00393.jpg" alt="Fremont Peak. View north northeast over Seneca Lake, Wind River Mountains. Sublette County, Wyoming, n.d."></a>'
theCaptions[3] = 'Fremont Peak. View north northeast over Seneca Lake, Wind River Mountains. Sublette County, Wyoming, n.d. ID. <a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20Gaskill,%20D.L.%20%20393ct" class="links">Gaskill, D.L. 393ct</a><br>'

theImages[4] = '<a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20GUATEMALA%20EARTHQUAKE%2014ct" class="links"><img src="images/CmainImage_geq00014.jpg" alt="Guatemala Earthquake 1976. Along Motagua fault trace where it crosses the Gualan soccer field. Note that "mole track" which is best developed in hard packed, brittle surface materials. 1976. Slide 14, U.S. Geological Survey Open-File Report 77-165."></a>'
theCaptions[4] = 'Guatemala Earthquake 1976. Along Motagua fault trace where it crosses the Gualan soccer field. Note that "mole track" which is best developed in hard packed, brittle surface materials. 1976. Slide 14, <br>U.S. Geological Survey <a href="http://pubs.er.usgs.gov/usgspubs/index.jsp?jboEventVo=PubResultView&view=basic&jboEvent=Search&pxfield_all=77-165&test=++Go++" class="links">Open-File Report 77-165</a>. ID. <a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20GUATEMALA%20EARTHQUAKE%2014ct" class="links">GUATEMALA EARTHQUAKE 14ct</a><br>'

theImages[5] = '<a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20Gill,%20J.R.%20439ct" class="links"><img src="images/CmainImage_gjr00439.jpg" alt="Canyon de Chelly National Monument, Arizona. White House ruins."></a>'
theCaptions[5] = 'Canyon de Chelly National Monument, Arizona. White House ruins. ID. <a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20Gill,%20J.R.%20439ct" class="links">Gill, J.R. 439ct</a><br>'

theImages[6] = '<a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20Hopper,%20M.G.%2020ct" class="links"><img src="images/CmainImage_hmg00020.jpg" alt="Coalinga, California, Earthquake May 2, 1983. Failed walls and cornice of a building in the restricted area of heavily damaged downtown Coalinga. May 4, 1983."></a>'
theCaptions[6] = 'Coalinga, California, Earthquake May 2, 1983. Failed walls and cornice of a building in the restricted area of heavily damaged downtown Coalinga. May 4, 1983. ID. <a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20Hopper,%20M.G.%2020ct" class="links">Hopper, M.G. 20ct</a><br>'

theImages[7] = '<a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20HVO%20%2014ct" class="links"><img src="images/CmainImage_hvo00014.jpg" alt="Hawaii Volcanoes National Park. May 1954 eruption of Kilauea Volcano. Halemaumau fountains. Photo by J.P. Eaton, May 31, 1954. "></a>'
theCaptions[7] = 'Hawaii Volcanoes National Park. May 1954 eruption of Kilauea Volcano. Halemaumau fountains. Photo by J.P. Eaton, May 31, 1954. ID. <a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20HVO%20%2014ct" class="links">HVO 14ct</a><br>'

theImages[8] = '<a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20HVO%20%2020ct" class="links"><img src="images/CmainImage_hvo00020.jpg" alt="Hawaii Volcanoes National Park. 1955 eruption of Kilauea Volcano. Iwasaki house in flames. Photo by J.P. Eaton, May 19, 1955."></a>'
theCaptions[8] = 'Hawaii Volcanoes National Park. 1955 eruption of Kilauea Volcano. Iwasaki house in flames. Photo by J.P. Eaton, May 19, 1955. ID. <a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20HVO%20%2020ct" class="links">HVO 20ct</a><br>'

theImages[9] = '<a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20HVO%20%2032ct" class="links"><img src="images/CmainImage_hvo00032.jpg" alt="Hawaii Volcanoes National Park. 1960 eruption of Kilauea Volcano. Papaya and fountain at Kapoho. January 1960."></a>'
theCaptions[9] = 'Hawaii Volcanoes National Park. 1960 eruption of Kilauea Volcano. Papaya and fountain at Kapoho. January 1960. ID. <a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20HVO%20%2032ct" class="links">HVO 32ct</a><br>'

theImages[10] = '<a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20HVO%20%2035ct" class="links"><img src="images/CmainImage_hvo00035.jpg" alt="Hawaii Volcanoes National Park. 1960 eruption of Kilauea Volcano. Higashi pond with the night sky aglow. January 1960."></a>'
theCaptions[10] = 'Hawaii Volcanoes National Park. 1960 eruption of Kilauea Volcano. Higashi pond with the night sky aglow. January 1960. ID. <a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20HVO%20%2035ct" class="links">HVO 35ct</a><br>'

theImages[11] = '<a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20HVO%20%2083ct" class="links"><img src="images/CmainImage_hvo00083.jpg" alt="Hawaii Volcanoes National Park. 1969-1971 Mauna Ulu eruption of Kilauea Volcano. Mauna Ulu dead end; lava flow across the road. June 1969."></a>'
theCaptions[11] = 'Hawaii Volcanoes National Park. 1969-1971 Mauna Ulu eruption of Kilauea Volcano. Mauna Ulu dead end; lava flow across the road. June 1969. <br>ID. <a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20HVO%20%2083ct" class="links">HVO 83ct</a><br>'

theImages[12] = '<a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20HVO%20216ct" class="links"><img src="images/CmainImage_hvo00216.jpg" alt="Hawaii Volcanoes National Park. 1972-1974 eruption of Kilauea Volcano. Hot pahoehoe on a new black sand beach near Kaena Point. The main flow enters the sea in the background. Steam is visible at both locations. Photo by R.L. Christiansen, October 11, 1972."></a>'
theCaptions[12] = 'Hawaii Volcanoes National Park. 1972-1974 eruption of Kilauea Volcano. Hot pahoehoe on a new black sand beach near Kaena Point. The main flow enters the sea in the background. Steam is visible at both locations. Photo by R.L. Christiansen, October 11, 1972. ID. <a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20HVO%20216ct" class="links">HVO 216ct</a><br>'

theImages[13] = '<a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20HVO%20418ct" class="links"><img src="images/CmainImage_hvo00418.jpg" alt="Hawaii Volcanoes National Park. Eruption of Kilauea Volcano beginning in 1983. Geologist measuring the height of a lava fountain. Photo by J.D. Griggs, March 28, 1983."></a>'
theCaptions[13] = 'Hawaii Volcanoes National Park. Eruption of Kilauea Volcano beginning in 1983. Geologist measuring the height of a lava fountain. Photo by J.D. Griggs, March 28, 1983. ID. <a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20HVO%20418ct" class="links">HVO 418ct</a><br>'

theImages[14] = '<a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20Lohman,%20S.W.%20%20%208cp" class="links"><img src="images/CmainImage_lswc0008.jpg" alt="Canyonlands National Park, Utah. Space image map of Canyonlands National Park and vicinity from unmanned Earth Resources Technology Satellite (ERTS-1) at a height of about 570 miles. The image covers an area about 100 miles square. Park boundaries are not shown because of the difficulty in locating them accurately, but features such as the Colorado and Green Rivers can be identified. Photo by U.S. National Aeronautics and Space Administration, August 23, 1972. Figure 7, U.S. Geological Survey Bulletin 1327."></a>'
theCaptions[14] = 'Canyonlands National Park, Utah. Space image map of Canyonlands National Park and vicinity from unmanned Earth Resources Technology Satellite (ERTS-1) at a height of about 570 miles. Photo by U.S. National Aeronautics and Space Administration, August 23, 1972. Figure 7, U.S. Geological Survey <br><a href="http://pubs.er.usgs.gov/usgspubs/index.jsp?jboEventVo=PubResultView&jboEvent=Search&view=adv&pxfield_series=B&pxfield_rpt_year=&pxfield_rpt_seq=1327&pxorderby=0&performSearch=Search+Now" class="links">Bulletin 1327</a>. ID. <a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20Lohman,%20S.W.%20%20%208cp" class="links">Lohman, S.W. 8cp</a><br>'

theImages[15] = '<a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20Meyer,%20C.E.%2019ct" class="links"><img src="images/CmainImage_mce00019.jpg" alt="Loma Prieta, California, Earthquake October 17, 1989. Santa Cruz Area. Searching for victims at a collapsed department store in the Pacific Garden Mall. Slide XIII-6, U.S. Geological Survey Open-File Report 90-547."></a>'
theCaptions[15] = 'Loma Prieta, California, Earthquake October 17, 1989. Santa Cruz Area. Searching for victims at a collapsed department store in the Pacific Garden Mall. Slide XIII-6, U.S. Geological Survey <a href="http://pubs.er.usgs.gov/usgspubs/index.jsp?jboEventVo=PubResultView&view=basic&jboEvent=Search&pxfield_all=90-547&test=++Go++" class="links">Open-File Report 90-547</a>. ID. <a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20Meyer,%20C.E.%2019ct" class="links">Meyer, C.E. 19ct</a><br>'

theImages[16] = '<a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20McKee,%20E.D.%20%20241ct" class="links"><img src="images/CmainImage_med00241.jpg" alt="Glen Canyon National Recreation Area, Utah. Labyrinth Canyon."></a>'
theCaptions[16] = 'Glen Canyon National Recreation Area, Utah. Labyrinth Canyon. ID. <a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20McKee,%20E.D.%20%20241ct" class="links">McKee, E.D. 241ct</a><br>'

theImages[17] = '<a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20McKee,%20E.D.%20%20923ct" class="links"><img src="images/CmainImage_med00923.jpg" alt="White Sands National Monument, New Mexico. Slump marks on a transverse dune. 1962."></a>'
theCaptions[17] = 'White Sands National Monument, New Mexico. Slump marks on a transverse dune. 1962. <br>ID. <a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20McKee,%20E.D.%20%20923ct" class="links">McKee, E.D. 923ct</a><br>'

theImages[18] = '<a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20McGimsey,%20R.G.%20162ct" class="links"><img src="images/CmainImage_mrg00162.jpg" alt="Glacier National Park, Montana. Game McGimsey on the summit of Mount Cleveland. August 21, 1983."></a>'
theCaptions[18] = 'Glacier National Park, Montana. Game McGimsey on the summit of Mount Cleveland. August 21, 1983. ID. <a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20McGimsey,%20R.G.%20162ct" class="links">McGimsey, R.G. 162ct</a><br>'

theImages[19] = '<a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20Trimble,%20D.E.%2014ct" class="links"><img src="images/CmainImage_tde00014.jpg" alt="Badlands National Monument, South Dakota. Photo by W.H. Raymond III. Figure 26, U.S. Geological Survey Bulletin 1493."></a>'
theCaptions[19] = 'Badlands National Monument, South Dakota. Photo by W.H. Raymond III. Figure 26, U.S. Geological Survey <a href="http://pubs.er.usgs.gov/usgspubs/index.jsp?jboEventVo=PubResultView&jboEvent=Search&view=adv&pxfield_series=B&pxfield_rpt_year=&pxfield_rpt_seq=1493&pxorderby=0&performSearch=Search+Now" class="links">Bulletin 1493.</a> ID. <a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20Trimble,%20D.E.%2014ct" class="links">Trimble, D.E. 14ct</a><br>'

theImages[20] = '<a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20Williams,%20S.J.%2022ct" class="links"><img src="images/CmainImage_wsj00022.jpg" alt="Fenwick Island, Maryland. Highly developed barrier beach at Ocean City. The dunes that once protected the island have been removed to improve the view, and the tall apartment buildings are so close to the water&acute;s edge that the beach is shadowed by mid-afternoon. Many of these buildings were damaged by flooding immediately after their construction. Beach replenishment along Fenwick Island in 1988 and 1990 by Maryland and the U.S. Army Corps of Engineers was designed to provide some temporary protection to the buildings and to increase the recreational value of the beach. 1990. Page 18, U.S. Geological Survey Circular 1075."></a>'
theCaptions[20] = 'Fenwick Island, Maryland. Highly developed barrier beach at Ocean City. The dunes that once protected the island have been removed to improve the view, and the tall apartment buildings are so close to the water&acute;s edge that the beach is shadowed by mid-afternoon. Many of these buildings were damaged by flooding immediately after their construction. 1990. Page 18, U.S. Geological Survey <a href"http://pubs.er.usgs.gov/usgspubs/index.jsp?jboEventVo=PubResultView&jboEvent=Search&view=adv&pxfield_series=CIR&pxfield_rpt_year=&pxfield_rpt_seq=1075&pxorderby=0&performSearch=Search+Now" class="links">Circular 1075</a>. <br>ID. <a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20Williams,%20S.J.%2022ct" class="links">Williams, S.J. 22ct</a><br>'

theImages[21] = '<a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20Carrara,%20P.%20222ct" class="links"><img src="images/CmainImage_car00222.jpg" alt="Remains of Lake Emma at the Sunnyside mine. Mining was being done under the lake when in June 1978 the roof of the stope collapsed, flooding the mine and draining the lake. San Juan Mountains. San Juan County, Colorado. September 12, 1979."></a>'
theCaptions[21] = 'Remains of Lake Emma at the Sunnyside mine. Mining was being done under the lake when in June 1978 the roof of the stope collapsed, flooding the mine and draining the lake. San Juan Mountains. San Juan County, Colorado. September 12, 1979. <br>ID. <a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20Carrara,%20P.%20222ct" class="links">Carrara, P. 222ct</a><br>'

theImages[22] = '<a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20Colton,%20R.B.%20610ct" class="links"><img src="images/CmainImage_crb00610.jpg" alt="Arches National Park, Utah. Delicate Arch with tourist providing a perspective, and the cautionary National Parks sign, 1972."></a>'
theCaptions[22] = 'Arches National Park, Utah. Delicate Arch with tourist providing a perspective, and the cautionary National Parks sign, 1972. ID. <a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20Colton,%20R.B.%20610ct" class="links">Colton, R.B. 610ct</a><br>'

theImages[23] = '<a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20Colton,%20R.B.%20641ct" class="links"><img src="images/CmainImage_crb00641.jpg" alt="Canyonlands National Park, Utah. Green River, Mineral Hill area, 1972."></a>'
theCaptions[23] = 'Canyonlands National Park, Utah. Green River, Mineral Hill area, 1972. ID. <a href="http://libraryphoto.cr.usgs.gov/cgi-bin/show_picture.cgi?ID=ID.%20Colton,%20R.B.%20641ct" class="links">Colton, R.B. 641ct</a><br>'

// ======================================
// do not change anything below this line
// ======================================

var j = 0
var p = theImages.length;

var preBuffer = new Array()
for (i = 0; i < p; i++){
   preBuffer[i] = new Image()
   preBuffer[i].src = theImages[i]
}

var whichImage = Math.round(Math.random()*(p-1));
function showImage(){
document.write(theImages[whichImage]);
}
function showCaption(){
document.write(theCaptions[whichImage]);
}
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