/* *********************************************************************** */
/* these scripts handle rollovers */
/* *********************************************************************** */

{
	bName = navigator.appName;
	bVer = parseInt(navigator.appVersion);

	if ((bName == "Netscape" && bVer >= 3) || (bName == "Microsoft Internet Explorer" && bVer >= 4)) br = "n3";
	else br = "n2";
	
	if (br == "n3") {
		function imgOn(imgName){
			if (br== "n3"){
				document[imgName].src = eval(imgName + "Rollover.src");
			}
		}		
		function imgOff(imgName,imgOffName){
			if (br== "n3"){
				document[imgName].src = eval(imgOffName + ".src");
			}
		}
		
		// the next two functions handle the rollovers on search.asp that show explanations of what the buttons do
		function imgOnMathProblems(imgName,imgExplanationName){
			if (br== "n3"){
				document[imgName].src = eval(imgName + "Rollover.src");
				document['imgExplanation'].src = eval(imgExplanationName + ".src");
			}
		}		
		function imgOffMathProblems(imgName,imgOffName,imgExplanationOffName){
			if (br== "n3"){
				document[imgName].src = eval(imgOffName + ".src");
				document['imgExplanation'].src = eval(imgExplanationOffName + ".src");
			}
		}
	}
}