// JavaScript Document




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					

	}
	
/**
 * DHTML phone number validation script. Courtesy of SmartWebby.com (http://www.smartwebby.com/dhtml/)
 */

// Declaring required variables
var digits = "0123456789";
// non-digit characters which are allowed in phone numbers
var phoneNumberDelimiters = "()-, ";
var zipNumberDelimiters = "-. ";
// characters which are allowed in international phone numbers
// (a leading + is OK)
var validWorldPhoneChars = phoneNumberDelimiters + "+";
var validWorldZipChars = zipNumberDelimiters + "+";
// Minimum no of digits in an international phone no.
var minDigitsInIPhoneNumber = 10;
var minDigitsInIZipNumber = 3;

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 checkInternationalFax(strPhone){
if(strPhone==""){return true;}
else{
s=stripCharsInBag(strPhone,validWorldPhoneChars);
return (isInteger(s) && s.length >= minDigitsInIPhoneNumber);
}
}

function checkInternationalZip(strPhone){
if(strPhone==""){return true;}
else{
s=stripCharsInBag(strPhone,zipNumberDelimiters);
return (isInteger(s) && s.length >= minDigitsInIZipNumber);
}
}




function validate()

{

var emailID=document.contactus.email;
var phone=document.contactus.phone;
var fax=document.contactus.fax;
var zip=document.contactus.zip;



if(document.contactus.fname.value=='')

{

alert("Please Fill First name");

document.contactus.fname.focus();

return false;

}

if(document.contactus.lname.value=='')

{

alert("Please Fill Last name");

document.contactus.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 (checkInternationalFax(fax.value)==false){
		alert("Please Enter a Valid Fax Number")
		fax.value=""
		fax.focus()
		return false
	}
	
		if (checkInternationalZip(zip.value)==false){
		alert("Please Enter a Valid Zip Number")
		zip.value=""
		zip.focus()
		return false
	}



return true;

}