// usage
// <script src="../scripts/mouseover.js"></script>
// onmouseout="outImage(this)" onmouseover="overImage(this)"

function overImage(ele) {
	var str = ele.src;
	var str1 = str.slice(0, str.indexOf('.gif'));
	str1 = str1 + '_on.gif';
	ele.src = str1;
}
function outImage(ele) {
	var str = ele.src;
	var str1 = str.slice(0, str.indexOf('_on.gif'));
	str1 = str1 + '.gif';
	ele.src = str1;
}