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")
		   return false
		}

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

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

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

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

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

 		 return true					
	}



// Declaring required variables
var digits = "0123456789";
// non-digit characters which are allowed in phone numbers
var phoneNumberDelimiters = "()- ";
// characters which are allowed in international phone numbers
// (a leading + is OK)
var validWorldPhoneChars = phoneNumberDelimiters + "+";
// Minimum no of digits in an international phone no.
var minDigitsInIPhoneNumber = 10;

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 validate()
{
	if (document.contactForm.firstName.value == "")
	{
	alert("First Name is required");
	document.contactForm.firstName.focus();
	return false;
	}
	
	if (document.contactForm.lastName.value == "")
	{
	alert("Last Name is required");
	document.contactForm.lastName.focus();
	return false;
	}
	
	if (document.contactForm.city.value == "")
	{
	alert("City is required");
	document.contactForm.city.focus();
	return false;
	}
	
	if (document.contactForm.state.value == "")
	{
	alert("State is required");
	document.contactForm.state.focus();
	return false;
	}
		
	
	var emailID=document.contactForm.eMail
	
	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;
	}
	
	var Phone=document.contactForm.workPhone
	
	if ((Phone.value==null)||(Phone.value=="")){
		alert("Work Number is required")
		Phone.focus()
		return false;
	}
	if (checkInternationalPhone(Phone.value)==false){
		alert("Please Enter a Valid Phone Number")
		Phone.value=""
		Phone.focus()
		return false;
	}


	var Phone=document.contactForm.homePhone
	
	if ((Phone.value==null)||(Phone.value=="")){
		alert("Home Number is required")
		Phone.focus()
		return false;
	}
	if (checkInternationalPhone(Phone.value)==false){
		alert("Please Enter a Valid Phone Number")
		Phone.value=""
		Phone.focus()
		return false;
	}
	
	var Phone=document.contactForm.cellPhone
	
	if ((Phone.value==null)||(Phone.value=="")){
		alert("Cell Number is required")
		Phone.focus()
		return false;
	}
	if (checkInternationalPhone(Phone.value)==false){
		alert("Please Enter a Valid Phone Number")
		Phone.value=""
		Phone.focus()
		return false;
	}

	if (document.contactForm.hear.value == "")
	{
	alert("How you heard about us is required");
	document.contactForm.hear.focus();
	return false;
	}
	
	if (document.contactForm.lifestyle.value == "")
	{
	alert("Please tell us more about yourself and your lifestyle");
	document.contactForm.lifestyle.focus();
	return false;
	}
	
	if (document.contactForm.type.value == "")
	{
	alert("Describe the type of person that you are looking for");
	document.contactForm.type.focus();
	return false;
	}
}