var getElementsByClassName = function (className, tag, elm){
				if (document.getElementsByClassName) {
					getElementsByClassName = function (className, tag, elm) {
						elm = elm || document;
						var elements = elm.getElementsByClassName(className),
							nodeName = (tag)? new RegExp("\\b" + tag + "\\b", "i") : null,
							returnElements = [],
							current;
						for(var i=0, il=elements.length; i<il; i+=1){
							current = elements[i];
							if(!nodeName || nodeName.test(current.nodeName)) {
								returnElements.push(current);
							}
						}
						return returnElements;
					};
				}
				else if (document.evaluate) {
					getElementsByClassName = function (className, tag, elm) {
						tag = tag || "*";
						elm = elm || document;
						var classes = className.split(" "),
							classesToCheck = "",
							xhtmlNamespace = "http://www.w3.org/1999/xhtml",
							namespaceResolver = (document.documentElement.namespaceURI === xhtmlNamespace)? xhtmlNamespace : null,
							returnElements = [],
							elements,
							node;
						for(var j=0, jl=classes.length; j<jl; j+=1){
							classesToCheck += "[contains(concat(' ', @class, ' '), ' " + classes[j] + " ')]";
						}
						try	{
							elements = document.evaluate(".//" + tag + classesToCheck, elm, namespaceResolver, 0, null);
						}
						catch (e) {
							elements = document.evaluate(".//" + tag + classesToCheck, elm, null, 0, null);
						}
						while ((node = elements.iterateNext())) {
							returnElements.push(node);
						}
						return returnElements;
					};
				}
				else {
					getElementsByClassName = function (className, tag, elm) {
						tag = tag || "*";
						elm = elm || document;
						var classes = className.split(" "),
							classesToCheck = [],
							elements = (tag === "*" && elm.all)? elm.all : elm.getElementsByTagName(tag),
							current,
							returnElements = [],
							match;
						for(var k=0, kl=classes.length; k<kl; k+=1){
							classesToCheck.push(new RegExp("(^|\\s)" + classes[k] + "(\\s|$)"));
						}
						for(var l=0, ll=elements.length; l<ll; l+=1){
							current = elements[l];
							match = false;
							for(var m=0, ml=classesToCheck.length; m<ml; m+=1){
								match = classesToCheck[m].test(current.className);
								if (!match) {
									break;
								}
							}
							if (match) {
								returnElements.push(current);
							}
						}
						return returnElements;
					};
				}
				return getElementsByClassName(className, tag, elm);
			};

			function doValidation(formId)
			{
				var success = true;
				
				var elements = getElementsByClassName("required");
					
				for(var i = 0; i < elements.length; i++)
				{
					var currentClass = elements[i].className;
					var newClassName = currentClass;
					
					if(elements[i].value == "")
					{
						if(currentClass.indexOf("validationFailed") == -1)
						{
							newClassName += " " + "validationFailed";
						}
						success = false;
					}
					else
					{
						if(currentClass.indexOf("validationFailed") != -1)
						{
							newClassName = newClassName.replace("validationFailed","");
						}
					}
					elements[i].className = newClassName;
				}
				if(success)
				{
					document.getElementById(formId).submit();
				}
			}