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("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
		   alert("Invalid E-mail ID")
		   return false
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		    alert("Invalid E-mail ID")
		    return false
		}

		 if (str.indexOf(at,(lat+1))!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		    alert("Invalid E-mail ID")
		    return false
		 }

		 if (str.indexOf(dot,(lat+2))==-1){
		    alert("Invalid E-mail ID")
		    return false
		 }
		
		 if (str.indexOf(" ")!=-1){
		    alert("Invalid E-mail ID")
		    return false
		 }

 		 return true					
	}
	
	
function ValidateForm(){
	var fname=document.mail.first_name
	var lname=document.mail.last_name
	var emailID=document.mail.email
	var Phone=document.mail.phone
	var digits = "0123456789";
	var phoneNumberDelimiters = "()- ";
	var validWorldPhoneChars = phoneNumberDelimiters + "+";
	var minDigitsInIPhoneNumber = 10;
    var mssg=document.mail.description
	var msglen=document.mail.description.value.length
		

	if ((fname.value==null)||(fname.value=="")){
		alert("Please Enter your First Name")
		fname.focus()
		return false
	}
	if ((lname.value==null)||(lname.value=="")){
		alert("Please Enter your Last Name")
		lname.focus()
		return false
	}
	if ((emailID.value==null)||(emailID.value=="")){
		alert("Please Enter your Email ID")
		emailID.focus()
		return false
	}
	
	if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}
	if ((Phone.value==null)||(Phone.value==""))
	{
		alert("Please Enter your Phone Number")
		Phone.focus()
		return false
	}
	if (checkInternationalPhone(Phone.value)==false)
	{
		alert("Please Enter a Valid Phone Number")
		Phone.value=""
		Phone.focus()
		return false
	}
	
	if ((mssg.value==null)||(mssg.value=="")){
		alert("Please Enter your Message")
		mssg.focus()
		return false
	}
	if (msglen < 50)
	{
		alert("Message should be minimum 50 Char.")
		mssg.focus()
		return false
	}	
	
	
	function isInteger(s)
	{   var i;
    	for (i = 0; i < s.length; i++)
	    {   

        var c = s.charAt(i);
        if (((c < "0") || (c > "9"))) return false;
    	}

    return true;
	}

	function stripCharsInBag(s, bag)
	{   var i;
    	var returnString = "";
	    for (i = 0; i < s.length; i++)
    	{   

        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);
}
	
	
	return true
	
 }



function focusIt()
{
document.mail.first_name.focus()
}