//onmouseover events for image
function jsImgOver(id, s) {
	var isrc = s + "_over.gif"; 
	var img1 = document.getElementById(id); 
	if (typeof img1=="object" && isrc!=null) {
		img1.src=isrc;
	}
}

//onmouseout events for image	
function jsImgOut(id, s) {
	var isrc = s + ".gif";
	var img1 = document.getElementById(id); 
	if (typeof img1=="object" && isrc!=null) {
		img1.src=isrc;
	}
}