//javascript
var ul = document.getElementById(‘ul);var as = ul.getElementsByTagName(‘a‘);for(var i = 0; i <as.length; i++) {    as.item(i).onmouseover = function() {	    var iframe_con = document.getElementById(pos_content);	    var src = http://www.mamicode.com/‘./content/‘ + this.innerHTML + ‘.html‘;"#um_div li a").mouseover(function () {	$("#" + pos_content + "_content").attr(‘src‘, ‘content/‘ + this.innerHTML + ".html");});