var left = [
{
img: "/Style/images/ww.jpg",url: "http://www.xjidc.net",percent: 60
},{
img: "/Style/images/ww.jpg",url: "http://www.xjidc.net",percent: 40
},{
img: "/Style/images/ww.jpg",url: "http://www.xjidc.net",percent: 0
}
];


function getpic(productName) {
			var random = parseInt(Math.random()*100);
			var temp = 0;
	
			for(var i = 0; i < productName.length && random > temp; i++) {
				temp += parseInt(productName[i].percent);
			}
			i = (random == 0 ? 0 : i - 1);

			return "<a href=\"" + productName[i].url + "\" target=_blank><img src=\"" + productName[i].img + "\" width=145  height=60 border=0/></a>";
}
document.write(getpic(left));