function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	} else {
		window.onload = function() {
		oldonload();
		func();
		}
	}
}

function tagCloud() {
	if(document.getElementById("tags_cloud")) {
		var tags = document.getElementById("tags_cloud");
        var tagLinks = tags.getElementsByTagName("a");
        var styles = new Array();
        styles[0] = new Array("#FF0000","FFCC00","FF9900","#0099FF","#999999"); //设定字体的颜色随机的种类
        styles[1] = new Array("12px","14px","16px"); //设定字体的大小随机的种类
        styles[2] = new Array("400","500","600","700"); //设定字体的粗细随机的种类
        for(var i=0; i<tagLinks.length; i++) {
        	tagLinks[i].style.color = styles[0][Math.floor(styles[0].length*Math.random())]; //设定字体的颜色
            tagLinks[i].style.fontSize = styles[1][Math.floor(styles[1].length*Math.random())]; //设定字体的大小
            tagLinks[i].style.fontWeight = styles[2][Math.floor(styles[2].length*Math.random())]; //设定字体的粗细
        }
    }
}

addLoadEvent(tagCloud);