<!-- hide from old browsers//make an array of image names, then use these in the names of the gifs (eg. nav_name.gif, nav_name_over.gif etc.) AND as the names of the images themselves. Make sure that navImgOn[nam].src and navImgOff[nam].src match the image names.var imgID = new Array('home','programs','students','funding','application','contact','events','feshome','yalehome');var navImgOn = new Array();var navImgOff = new Array();function cacheImages(){	for(i=0;i<imgID.length;i++){		var nam = imgID[i];		navImgOn[nam] = new Image;		navImgOn[nam].src = "images/nav/"+nam+"_on.gif";		navImgOff[nam] = new Image;		navImgOff[nam].src = "images/nav/"+nam+"_off.gif";	}}function rollOn(nam){	document.images[nam].src=navImgOn[nam].src;	return true;}function rollOff(nam){	document.images[nam].src=navImgOff[nam].src;	return true;}//-->