/*
 * Here is the random picture generator for the front page of the Geological
 * Sciences webpage.
 *
 * Modified 10/9/04 by RAB to provide descriptive alt tags for improved accessibility
 */



function generateRandom() {

//Generate a random image as well as an explanation

image = new Image();
text = new String();
num = 0;

text[num] = "Petrology class field trip to lava flows at Gooseberry Falls during spring thaw, 2011"
image[num] = "<img class='contentimg' src='images/randompics/geol2312spring2011.jpg' alt='"+text[num++]+"'>"

text[num] = "Anorthosite Chimney, Split Rock State Park"
image[num] = "<img class='contentimg' src='images/randompics/anorthositeChimneySplitRock.jpg' alt='"+text[num++]+"'>"

text[num] = "Anorthosite Quarry, Temperance River State Park"
image[num] = "<img class='contentimg' src='images/randompics/anorthositeQuarryTemperanceRiver.jpg' alt='"+text[num++]+"'>"

text[num] = "Cooling joints in North Shore lava flow"
image[num] = "<img class='contentimg' src='images/randompics/coolingJointsNorthShoreLavaFlow.jpg' alt='"+text[num++]+"'>"


text[num] = "High Falls, Pigeon River"
image[num] = "<img class='contentimg' src='images/randompics/highFallsPigeonRiver.jpg' alt='"+text[num++]+"'>"

text[num] = "Ropey Pahoehoe Flow Top, Temperance River State Park"
image[num] = "<img class='contentimg' src='images/randompics/ropeyPahoehoeFlow.jpg' alt='"+text[num++]+"'>"

text[num] = "Tofte Overlook, Anorthosite Knob, Superior Hiking Trail"
image[num] = "<img class='contentimg' src='images/randompics/anorthositeKnobSuperiorTrail.jpg' alt='"+text[num++]+"'>"

text[num] = "Volcanic Debris Flow, Caribou River"
image[num] = "<img class='contentimg' src='images/randompics/volcanicDebrisFlowCaribouRiver.jpg' alt='"+text[num++]+"'>"


text[num] = "Waterfall, Split Rock State Park"
image[num] = "<img class='contentimg' src='images/randompics/splitRockWaterfall.jpg' alt='"+text[num++]+"'>"

text[num] = "Chrysocolla sample: UMD Pagnuccio Mineral Collection"
image[num] = "<img class='contentimg' src='images/randompics/chrysocollaPagnuccio.jpg' alt='"+text[num++]+"'>"


text[num] = "Datolite sample: UMD Pagnuccio Mineral Collection"
image[num] = "<img class='contentimg' src='images/randompics/datolitePagnuccio.jpg' alt='"+text[num++]+"'>"


text[num] = "Hematite sample: UMD Pagnuccio Mineral Collection"
image[num] = "<img class='contentimg' src='images/randompics/hematitePagnuccio.jpg' alt='"+text[num++]+"'>"

text[num] = "Tom Johnson and UMD students: Malawi, Africa"
image[num] = "<img class='contentimg' src='images/randompics/johnsonMalawi.jpg' alt='"+text[num++]+"'>"


text[num] = "UMD students taking sediment core samples: Lake Malawi, Africa"
image[num] = "<img class='contentimg' src='images/randompics/malawiCoreSamples.jpg' alt='"+text[num++]+"'>"


text[num] = "Native copper sample: Upper Penisula, Michigan"
image[num] = "<img class='contentimg' src='images/randompics/nativeCopperMichigan.jpg' alt='"+text[num++]+"'>"


text[num] = "Peristerite sample: UMD Pagnuccio Mineral Collection"
image[num] = "<img class='contentimg' src='images/randompics/peristeritePagnuccio.jpg' alt='"+text[num++]+"'>"


text[num] = "Pyrite sample: Park City, Utah"
image[num] = "<img class='contentimg' src='images/randompics/pyriteUtah.jpg' alt='"+text[num++]+"'>"


text[num] = "Shattuckite sample: UMD Pagnuccio Mineral Collection"
image[num] = "<img class='contentimg' src='images/randompics/shattuckitePagnuccio.jpg' alt='"+text[num++]+"'>"

text[num] = "UMD Undergraduate Students on Lake Malawi"
image[num] = "<img class='contentimg' src='images/randompics/studentResearchVessel.jpg' alt='"+text[num++]+"'>"

text[num] = "Sylvite sample: UMD Pagnuccio Mineral Collection"
image[num] = "<img class='contentimg' src='images/randompics/sylvitePagnuccio.jpg' alt='"+text[num++]+"'>"

text[num] = "Deploying a gravity corer off the Blue Heron"
image[num] = "<img class='contentimg' src='images/randompics/gravityCoring.jpg' alt='"+text[num++]+"'>"

text[num] = "Fjord Cliffs on the west coast of Greenland"
image[num] = "<img class='contentimg' src='images/randompics/GreenlandFjordCliffs.jpg' alt='"+text[num++]+"'>"

text[num] = "UMD field trip to Iceland"
image[num] = "<img class='contentimg' src='images/randompics/icelandStudents.jpg' alt='"+text[num++]+"'>"

text[num] = "UMD field trip to Iceland"
image[num] = "<img class='contentimg' src='images/randompics/icelandStudents2.jpg' alt='"+text[num++]+"'>"

text[num] = "Mike, Hillary and Grace at Brims Mesa"
image[num] = "<img class='contentimg' src='images/randompics/MikeHilaryGrace-on-BrimsMesa.jpg' alt='"+text[num++]+"'>"

text[num] = "Howard Mooers, Iceland field trip"
image[num] = "<img class='contentimg' src='images/randompics/mooresIceland.jpg' alt='"+text[num++]+"'>"

text[num] = "Aerial view of the Blue Heron"
image[num] = "<img class='contentimg' src='images/randompics/blueheron.jpg' alt='"+text[num++]+"'>"

text[num] = "Deploying a multicorer off of the Blue Heron"
image[num] = "<img class='contentimg' src='images/randompics/blueHeronCore.jpg' alt='"+text[num++]+"'>"

text[num] = "Professor Gallup talking with student(s) on the Blue Heron"
image[num] = "<img class='contentimg' src='images/randompics/blueHeronGroehler.jpg' alt='"+text[num++]+"'>"

text[num] = "Blue Heron coming into port"
image[num] = "<img class='contentimg' src='images/randompics/blueHeronPort.jpg' alt='"+text[num++]+"'>"

text[num] = "Park Point in Duluth, Minnesota"
image[num] = "<img class='contentimg' src='images/randompics/27.jpg' alt='"+text[num++]+"'>"

text[num] = "Charlie Matsch leads a Glacial geology field trip"
image[num] = "<img class='contentimg' src='images/randompics/charliefield.jpg' alt='"+text[num++]+"'>"

text[num] = "Copper sample"
image[num] = "<img class='contentimg' src='images/randompics/Copper.jpg' alt='"+text[num++]+"'>"

text[num] = "Devils Tower, Wyoming, UMD field trip"
image[num] = "<img class='contentimg' src='images/randompics/devils.jpg' alt='"+text[num++]+"'>"

text[num] = "Eye agate sample: UMD Mineral Collection"
image[num] = "<img class='contentimg' src='images/randompics/EyeAgate.jpg' alt='"+text[num++]+"'>"

text[num] = "UMD Pagnuccio Collection fluorite sample"
image[num] = "<img class='contentimg' src='images/randompics/Fluorite.jpg' alt='"+text[num++]+"'>"

text[num] = "Gooseberry Falls, North Shore of Lake Superior"
image[num] = "<img class='contentimg' src='images/randompics/goose.jpg' alt='"+text[num++]+"'>"

text[num] = "Duluth aerial lift-bridge"
image[num] = "<img class='contentimg' src='images/randompics/lift.jpg' alt='"+text[num++]+"'>"

text[num] = "Lake Superior from space (NASA photo)"
image[num] = "<img class='contentimg' src='images/randompics/lksuperior.jpg' alt='"+text[num++]+"'>"

text[num] = "Mastodon"
image[num] = "<img class='contentimg' src='images/randompics/mastodon.jpg' alt='"+text[num++]+"'>"

text[num] = "Park Point, in Duluth"
image[num] = "<img class='contentimg' src='images/randompics/mnpoint.jpg' alt='"+text[num++]+"'>"

text[num] = "Rhodochrosite sample: UMD Mineral Collection"
image[num] = "<img class='contentimg' src='images/randompics/Rhodochrosite.jpg' alt='"+text[num++]+"'>"

text[num] = "Ripples at Mission Creek, Fon Du Lac, Minnesota"
image[num] = "<img class='contentimg' src='images/randompics/ripplesmissioncreek3.jpg' alt='"+text[num++]+"'>"


text[num] = "Shovel Point, North Shore of Lake Superior"
image[num] = "<img class='contentimg' src='images/randompics/shovel.jpg' alt='"+text[num++]+"'>"

text[num] = "Alteration in Icelandite, North Shore of Lake Superior"
image[num] = "<img class='contentimg' src='images/randompics/stop2e.jpg' alt='"+text[num++]+"'>"

text[num] = "Thomson Dam anticline, Thomson, Minnesota"
image[num] = "<img class='contentimg' src='images/randompics/thomson.jpg' alt='"+text[num++]+"'>"

text[num] = "In the field, Transantarctic Mountains, Antarctica"
image[num] = "<img class='contentimg' src='images/randompics/antarctic_field.jpg' alt='"+text[num++]+"'>"

text[num] = "North Shore basalt Lava flows"
image[num] = "<img class='contentimg' src='images/randompics/basalts.jpg' alt='"+text[num++]+"'>"

text[num] = "Folded carbonate, Cambrian Bluff, Antarctica"
image[num] = "<img class='contentimg' src='images/randompics/cambrian_bluff.jpg' alt='"+text[num++]+"'>"

text[num] = "Dry Valleys, Antarctica"
image[num] = "<img class='contentimg' src='images/randompics/dry_valleys.jpg' alt='"+text[num++]+"'>"

text[num] = "Folded gneisses, Antarctica"
image[num] = "<img class='contentimg' src='images/randompics/folded_gneisses_Ant.jpg' alt='"+text[num++]+"'>"

text[num] = "John Green leads a Petrology field trip"
image[num] = "<img class='contentimg' src='images/randompics/green_fieldtrip.jpg' alt='"+text[num++]+"'>"

text[num] = "Migmatite selvedge, Minnesota"
image[num] = "<img class='contentimg' src='images/randompics/migmatite.jpg' alt='"+text[num++]+"'>"

text[num] = "North Shore of Lake Superior"
image[num] = "<img class='contentimg' src='images/randompics/north_shore.jpg' alt='"+text[num++]+"'>"

text[num] = "Pipe vesicles in a basalt lava flow, North Shore"
image[num] = "<img class='contentimg' src='images/randompics/pipe_vescicles.jpg' alt='"+text[num++]+"'>"

text[num] = "Students at Sedona Arches, UMD spring field trip"
image[num] = "<img class='contentimg' src='images/randompics/sedonaArchesStudents.jpg' alt='"+text[num++]+"'>"

text[num] = "Sedona Arches, UMD spring field trip"
image[num] = "<img class='contentimg' src='images/randompics/sedonaArches.jpg' alt='"+text[num++]+"'>"

text[num] = "Tent camp, Antarctica"
image[num] = "<img class='contentimg' src='images/randompics/tent_camp.jpg' alt='"+text[num++]+"'>"

text[num] = "MODIS image of Lake Superior (NASA image)"
image[num] = "<img class='contentimg' src='images/randompics/superior.nasa.jpg' alt='"+text[num++]+"'>"

text[num] = "Deformed trough and planar-tabular cross beds, Cretaceous Ferron Sandstone, Utah"
image[num] = "<img class='contentimg' src='images/randompics/deformed_xbeds_Ferron.jpg' alt='"+text[num++]+"'>"

text[num] = "Deltaic parasequences, Cretaceous Ferron Sandstone, Utah"
image[num] = "<img class='contentimg' src='images/randompics/delta_lobes_Ferron_Utah.jpg' alt='"+text[num++]+"'>"

text[num] = "Trough crossbeds, Cretaceous Ferron Sandstone, Utah"
image[num] = "<img class='contentimg' src='images/randompics/trough_xbeds_Ferron.jpg' alt='"+text[num++]+"'>"

text[num] = "Vertical climbing-ripple cross-lamination, Cretaceous Ferron Sandstone, Utah"
image[num] = "<img class='contentimg' src='images/randompics/vertical_climbing_ripples.jpg' alt='"+text[num++]+"'>"

//add additional pics here


inc = Math.floor(Math.random() * num);
document.write(image[inc]);
document.write('<br /><span class="imgbox">' + text[inc] + '</span>');

}