function validateForm(form) {
if (form.fname.value == "") { 
   alert("First name is required."); 
   form.fname.focus( ); 
   return false; 
   }

if (form.lname.value == "") { 
   alert("Last name is required."); 
   form.lname.focus( ); 
   return false; 
   }

if (form.email.value == "") { 
   alert("Email address is required."); 
   form.email.focus( ); 
   return false; 
   }

	var str=form.email.value;
	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
		 }



if (form.phone.value == "") { 
   alert("Phone number is required."); 
   form.phone.focus( ); 
   return false; 
   }







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

	var Phone=form.phone;
	
	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 (form.timezone.value == "") { 
   alert("Time Zone is required."); 
   form.timezone.focus( ); 
   return false; 
   }

if (form.company.value == "") { 
   alert("Company is required."); 
   form.company.focus( ); 
   return false; 
   }

if (form.user_title.value == "") { 
   alert("Your Title is required."); 
   form.user_title.focus( ); 
   return false; 
   }
















}