/**
 * @author andrew
 */
		function getElementsByClassName(className, tag, elm){
	        var testClass = new RegExp("(^|\\s)" + className + "(\\s|$)");
	        var tag = tag || "*";
	        var elm = elm || document;
	        var elements = (tag == "*" && elm.all)? elm.all : elm.getElementsByTagName(tag);
	        var returnElements = [];
	        var current;
	        var length = elements.length;
	        for(var i=0; i<length; i++){
		        current = elements[i];
		        if(testClass.test(current.className)){
			        returnElements.push(current);
		        }
	        }
	        return returnElements;
        }