getElementsByClassName() doesn’t work in old Internet Explorers like IE6, IE7, IE8
IE6, Netscape 6+, Firefox, and Opera 7+ copy the following script in your page: document.getElementsByClassName = function(cl) { var retnode = []; var elem = this.getElementsByTagName(‘*’); for (var i = 0; i < elem.length; i++) { if((‘ ‘ + elem[i].className + ‘ ‘).indexOf(‘ ‘ + cl + ‘ ‘) > -1) retnode.push(elem[i]); } return retnode; … Read more