function getElementsByClassName(cl) {
	//alert("hey you tried to get class name: " + cl);
	var retnode = [];
	var myclass = new RegExp('\\b'+cl+'\\b');
	var elem = this.getElementsByTagName('*');
	for (var i = 0; i < elem.length; i++) {
		var classes = elem[i].className;
		if (myclass.test(classes)){
			retnode.push(elem[i]);
		}
	}
	return retnode;
};