// JavaScript Document
// Glory Exhibit Homepage Image Swap
// Jason Kramer
// 09-28-2009
// Based on:  http://www.daniweb.com/forums/thread22560.html#

// aImages is a nested array containg:
// The image file name
// The ALT text
// The width
// The height

var aImages = new Array();
aImages[0] = ['Sunbeam.png','Our Sunbeam newspaper, 1856.',636,827,'sunbeam.html'];
aImages[1] = ['AcademySubscription.png','Subscription advertisement, 1772.',578,904,'subscription.html'];
aImages[2] = ['DelawareCollegeReview.png','Delaware College Review, 1887.',567,800,'review.html'];
aImages[3] = ['Recitation1892.png','Recitation Hall, circa 1900.',672,510,'recitation.html'];
aImages[4] = ['Pestalozzi.png','Pestalozzi No Name, 1881.',556,698,'pestalozzi.html'];
aImages[5] = ['OldCollegeBack.png','Delaware College campus, circa 1895.',571,422,'oldcollegeback.html'];
aImages[6] = ['OldCollegeca1895.png','Old College, circa 1895.',561,421,'oldcollege.html'];
aImages[7] = ['NewArkCollege.png','New Ark College, 1835.',411,261,'newarkcollege.html'];
aImages[8] = ['MilitaryScience.png','Military Science cadets, circa 1895.',563,405,'militaryscience.html'];
aImages[9] = ['DeltaPhiCover.png','Delta Phi program, 1898.',382,286,'deltaphi.html'];
aImages[10] = ['DeltaPhi1stPage.png','Delta Phi program, 1898.',366,287,'deltaphi.html'];
aImages[11] = ['AcademyBalanceSheet.png','Balance sheet showing subscriptions, 1772.',592,927,'balance_sheet.html'];
aImages[12] = ['AcademyBuilding.png','Academy Building.',699,560,'academybuilding.html'];
aImages[13] = ['Circular1871.png','Circular of Delaware College, 1871.',419,652,'1871circular.html'];
aImages[14] = ['Catalogue1853.png','Catalogue of Delaware College, 1853.',406,644,'1853catalogue.html'];
aImages[15] = ['1848Commencement.png','Commencement program, 1848.',375,598,'1848commencement.html'];
aImages[16] = ['AcademyCatalogue1843.png','Catalogue of the Academy of Newark, 1843.',388,634,'1843catalogue.html'];
aImages[17] = ['1836Commencement.png','Commencement program, 1836.',325,555,'1836commencement.html'];
aImages[18] = ['Athenaendebatebook.png','Athenaen Society book.',2008,1228,'debatingbook.html'];
aImages[19] = ['1834address.png','Inaugural address, 1834.',2480,2054,'inauguraladdress.html'];
aImages[20] = ['FrancisAllison.png','Francis Alison.',903,748,'vision.html'];
aImages[21] = ['LiteraryPins.png','Literary society pins.',539,294,'pins.html'];
aImages[22] = ['1845-2-Winter-Session-Invoice.png','Winter Session Invoice, 1845.',315,217,'invoice.html'];
aImages[23] = ['1857-30-Schedule-of-Events.png','Commencement program, 1857.',640,450,'1857commencement.html'];

var maxImage = aImages.length;
var whichImage = Math.round(Math.random()*(maxImage-1));
var imgWidth = aImages[whichImage][2];
var imgHeight = aImages[whichImage][3];

if (imgWidth > 334) {
	imgHeight = ((imgHeight * 334)/imgWidth);
	imgWidth = 334;
}

function showImage(){
	document.write('<div style="width:'+(imgWidth+4)+'px"><div class="captionedimage"><a href="'+aImages[whichImage][4]+'"><img src="images/'+aImages[whichImage][0] + '" alt="'+aImages[whichImage][1] + '" width="' + imgWidth + '" height="' + imgHeight + '"/></a>'+aImages[whichImage][1]+'</div></div>');
}