//---------------------------------------
// start: BROWSER DETECTION
//---------------------------------------

//for NS 4+, IE 5+
var doc, doc2, doc3, sty;
var n4,ie,n6;
	if (document.layers){
		n4=true;doc = "document.";doc2="document.";doc3="";sty="";
	} else if (document.all){
		ie=true;doc = "document.all.";doc2="";doc3="";sty=".style";
	} else if(document.getElementById){
		n6=true;doc = "document.getElementById('";doc2="'');";doc3="');";sty=".style";
	} 
//---------------------------------------
// end: BROWSER DETECTION
//---------------------------------------
//---------------------------------------
// start: main menu data/functions
//---------------------------------------
	menuData = new Array('m_home',38
										,'m_about_mssa',220
										,'m_information',198
										,'m_research_tools',107
										,'m_univ_archives',140)
											
	menuImageArray = new Array();									
	function loadImages(mData){
		numCols =2
		numRows = mData.length/numCols
		for(var i=0; i < numRows; i++){
			imgName = mData[i*numCols]
			imgWidth = mData[(i*numCols)+1]
			imgOnName  = imgName + 'On' 
			menuImageArray[imgOnName] = new Image(imgWidth,26)
			menuImageArray[imgOnName].src = "imgs/" + imgName + "_on.gif"

			imgOffName  = imgName + 'Off' 
			menuImageArray[imgOffName] = new Image(imgWidth,26)
			menuImageArray[imgOffName].src = "imgs/" + imgName + "_off.gif"
		}
	}
	loadImages(menuData);
	
	
	function flipImg(imgName,onOff){
		imgObj = eval('document.' + imgName)
		if (onOff==1){	
			//imgObj.src = menuImageArray[(imgName + 'On' )].src;
			imgObj.src = eval('menuImageArray.'+ imgName + 'On.src');

		}else {
			//imgObj.src = menuImageArray[(imgName + 'Off' )].src;
			imgObj.src = eval('menuImageArray.'+ imgName + 'Off.src');

		}
	}
//---------------------------------------
// end: main menu data/functions
//---------------------------------------
sectionImageNumArray = new Array('3460','3126','5613','6834');

function popSectionImage(sectionNum){
	//sectionNum=2;	
	var winParams = 'toolbar=1,scrollbars=1,location=1,statusbar=0,menubar=1,resizable=1,width=800,height=580,left=40,top=10'
	linkStr = 'http://mssa.library.yale.edu/madid/advancedSearch.php?srchType=imageNumberSearch&imgNum=' + sectionImageNumArray[sectionNum-1];
	popPict = window.open(linkStr,'MSSA section image',winParams);
	popPict.focus();		
}