var digits = "0123456789";
var phoneNumberDelimiters = "()- ";
var validWorldPhoneChars = phoneNumberDelimiters + "+";
var minDigitsInIPhoneNumber = 5;

function isInteger(s)
{   var i;
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character is number.
        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    }
    // All characters are numbers.
    return true;
}

function stripCharsInBag(s, bag)
{   var i;
    var returnString = "";
    // Search through string's characters one by one.
    // If character is not in bag, append to returnString.
    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }
    return returnString;
}

function checkInternationalPhone(strPhone)
{
s=stripCharsInBag(strPhone,validWorldPhoneChars);
return (isInteger(s) && s.length >= minDigitsInIPhoneNumber);
}

function validateQut()
{
	if (document.frmQut.txtQName.value == "")
	{
		alert ("Please enter Name.");
		document.frmQut.txtQName.focus();
		return false;
	}
	if (echeck(document.frmQut.txtQEmail.value)==false)
	{
		document.frmQut.txtQEmail.focus();
		return false;
	}
	if (checkInternationalPhone(document.frmQut.txtQPhone.value)==false)
	{
		alert ("Please enter Phone Number.");
		document.frmQut.txtQPhone.focus();
		return false;
	}	
	if (document.frmQut.selQInterest.value == "")
	{
		alert ("Please select Name of List.");
		document.frmQut.selQInterest.focus();
		return false;
	}
	document.frmQut.method='post';
	return true;
}
function echeck(str)
{
		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1){
		   alert("Please enter valid Email Address")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Please enter valid Email Address")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
			alert("Please enter valid Email Address")
			return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
			alert("Please enter valid Email Address")
			return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
			alert("Please enter valid Email Address")
			return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
			alert("Please enter valid Email Address")
			return false
		 }

		 if (str.indexOf(" ")!=-1){
			alert("Please enter valid Email Address")
			return false
		 }

		 return true
}