window.onload = function() {
	syls = document.getElementsByClassName("seeVIDS");
			for (i=0; i<syls.length; i++) {
				syls[i].onmouseover = function() {
					this.firstChild.src ="../images/tVideos_over.png";
					//this.firstChild.src ="images/"+alist[n]+".png";
				}
				syls[i].onmouseout = function() {
					this.firstChild.src ="../images/tVideos.png";
					//this.firstChild.src ="images/"+alist[n]+"_over.png";
				}
			}
			
			syls = document.getElementsByClassName("seeQUIZZES");
			for (i=0; i<syls.length; i++) {
				syls[i].onmouseover = function() {
					this.firstChild.src ="../images/quizSamples_over.png";
					//this.firstChild.src ="images/"+alist[n]+".png";
				}
				syls[i].onmouseout = function() {
					this.firstChild.src ="../images/quizSamples.png";
					//this.firstChild.src ="images/"+alist[n]+"_over.png";
				}
			}
			
			syls = document.getElementsByClassName("seeCD");
			for (i=0; i<syls.length; i++) {
				syls[i].onmouseover = function() {
					this.firstChild.src ="../images/CDonly_over.png";
					//this.firstChild.src ="images/"+alist[n]+".png";
				}
				syls[i].onmouseout = function() {
					this.firstChild.src ="../images/CDonly.png";
					//this.firstChild.src ="images/"+alist[n]+"_over.png";
				}
			}
}