var sMissingErrMsg = "";
var sInvalidErrMsg = "";


function validInput(evt)
{
	sElement = evt["srcElement"]["obj"];
	if(sElement){
		if(sElement.value!=""){
			sElement.className = sElement.className.replace("invalidInput","");
		}
	}
}
function attachInputEventsElements(objForm,sTagNames)
{
	var arrElements = objForm.getElementsByTagName(sTagNames);
	for(n=0;n<arrElements.length;n++){
		if(arrElements[n].attachEvent){
			arrElements[n].attachEvent("onkeyup",validInput);
			arrElements[n].obj = arrElements[n];
		}else{
			arrElements[n].addEventListener("keyup",function (){
				if(this.value!=""){
					this.className = this.className.replace("invalidInput","");
				}
			},false);
		}
	}
}
function validatePage(objForm)
{
	sMissingErrMsg = "";
	sInvalidErrMsg = "";
	var sErrMsg = ""
	bSetFocus = false;
	validateElements(objForm,"input");
	validateElements(objForm,"select");
	validateElements(objForm,"textarea");
	if(sMissingErrMsg!=""){
		sErrMsg = sErrMsg + "Following information(s) is missing: \n" + sMissingErrMsg;
	}
	if(sInvalidErrMsg!=""){
		sErrMsg = sErrMsg + "Following information(s) is invalid: \n" + sInvalidErrMsg;
	}
	if(sErrMsg!==""){
		sErrMsg = replaceAll(sErrMsg, "_", " ")
		alert(sErrMsg);
		return false;
	}
	return true;
}


function replaceAll(sMainStr, sReplaceWhat, sReplaceWith)
{
	while(sMainStr.indexOf(sReplaceWhat)>-1){
		sMainStr = sMainStr.replace(sReplaceWhat,sReplaceWith);
	}
	return sMainStr;
}
function validateElements(objForm,sElementName)
{	
	var arrElements = objForm.getElementsByTagName(sElementName);
	for(n=0;n<arrElements.length;n++){
		if(arrElements[n].className.indexOf("required")>-1 && arrElements[n].value==""){
			sMissingErrMsg = sMissingErrMsg + "      " + arrElements[n].name +"\n";
			arrElements[n].className = arrElements[n].className + " invalidInput";
			attachInputEvents(arrElements[n]);
		}
		if(arrElements[n].className.indexOf("Num")>-1 && arrElements[n].value!="" && fSafeNum(arrElements[n].value)==0 && isNaN(arrElements[n].value)){
			sInvalidErrMsg = sInvalidErrMsg + "      " + arrElements[n].name +"\n";
			arrElements[n].className = arrElements[n].className + " invalidInput";
			attachInputEvents(arrElements[n]);
		}
		if(arrElements[n].className.indexOf("Email")>-1 && arrElements[n].value!="" && (arrElements[n].value.indexOf("@")==-1 ||arrElements[n].value.indexOf(".")==-1)){
			sInvalidErrMsg = sInvalidErrMsg + "      " + arrElements[n].name +"\n";
			arrElements[n].className = arrElements[n].className + " invalidInput";
			attachInputEvents(arrElements[n]);
		}
		if(arrElements[n].className.indexOf("MobilePhone")>-1 && arrElements[n].value!=""){
			var sPhoneNumber = arrElements[n].value;
			sPhoneNumber = replaceAll(sPhoneNumber , ",", "")
			sPhoneNumber = replaceAll(sPhoneNumber , "+", "")
			sPhoneNumber = replaceAll(sPhoneNumber , " ", "")
			sPhoneNumber = replaceAll(sPhoneNumber , "(", "")
			sPhoneNumber = replaceAll(sPhoneNumber , ")", "")
			sPhoneNumber = replaceAll(sPhoneNumber , "-", "")
			if(isNaN(sPhoneNumber) || sPhoneNumber.length<10){
				sInvalidErrMsg = sInvalidErrMsg + "      " + arrElements[n].name +"\n";
				arrElements[n].className = arrElements[n].className + " invalidInput";
				attachInputEvents(arrElements[n]);
			}
		}
		if(arrElements[n].className.indexOf("HomePhone")>-1 && arrElements[n].value!=""){
			var sPhoneNumber = arrElements[n].value;
			sPhoneNumber = replaceAll(sPhoneNumber , ",", "")
			sPhoneNumber = replaceAll(sPhoneNumber , "+", "")
			sPhoneNumber = replaceAll(sPhoneNumber , " ", "")
			sPhoneNumber = replaceAll(sPhoneNumber , "(", "")
			sPhoneNumber = replaceAll(sPhoneNumber , ")", "")
			sPhoneNumber = replaceAll(sPhoneNumber , "-", "")
			if(isNaN(sPhoneNumber) || sPhoneNumber.length<6){
				sInvalidErrMsg = sInvalidErrMsg + "      " + arrElements[n].name +"\n";
				arrElements[n].className = arrElements[n].className + " invalidInput";
				attachInputEvents(arrElements[n]);
			}
		}
		if((sMissingErrMsg!="" || sInvalidErrMsg!="") && !bSetFocus){
			arrElements[n].focus();
			bSetFocus = true;
		}
		
	}
}
function attachInputEvents(sObj)
{
	if(sObj.attachEvent){
		sObj.attachEvent("onkeyup",validInput);
		sObj.obj = sObj;
	}else{
		sObj.addEventListener("keyup",function (){
			if(this.value!=""){
				this.className = this.className.replace("invalidInput","");
			}
		},false);
	}
}
function fSafeNum(str){
	str = str + "";
	str = replaceAll(str,",","");
	if(isNaN(str) || str==""){
		return 0;
	} else {
		return parseFloat(str);
	}
}