function rollOver() {
	var preload = new Array();
	var imgs = document.getElementsByTagName('img');
	var total = imgs.length;
	for (i=0; i<total; i++) {
		if (imgs[i].className == 'rollover') {
			var out = imgs[i].getAttribute('src');
			var last = out.length;
			var type = out.substring(out.lastIndexOf('.'), last);
			var over = out.replace(type, 'o'+type);
			//preload
			preload[i] = document.createElement("img");
			preload[i].src = over;
			//over
			imgs[i].setAttribute('over', over);
			imgs[i].onmouseover = imgs[i].onmousedown = function () {
				this.src = this.getAttribute('over');
				};
			//out
			imgs[i].setAttribute('out', out);
			imgs[i].onmouseout = imgs[i].onmouseup = function () {
				this.src = this.getAttribute('out');
				};
			}
		}
	}
if (window.addEventListener) {
	window.addEventListener("load", rollOver, false);
	} else if (window.attachEvent) {
		window.attachEvent("onload", rollOver);
		}
if(navigator.userAgent.indexOf("Mac") != -1){
	document.write('<link rel="stylesheet" href="/common/css/font_mac.css" type="text/css" media="screen,tv,print">');
}