// JavaScript Document
function chkform()
{
if(document.frmcontact.name.value.split(" ").join("").length == 0)
{
	alert("Please enter name.");
	document.getElementById("name").focus();
	return false;
}
if(document.frmcontact.address.value.split(" ").join("").length == 0)
{
	alert("Please enter address.");
	document.getElementById("address").focus();
	return false;
}



if(document.frmcontact.emailid.value.split(" ").join("").length == 0)
{
	alert("Please enter E-mail.");
	document.getElementById("emailid").focus();
	return false;
}
	var email = document.frmcontact.emailid.value;


	if(email.split(" ").join("").length == 0)
	{
		alert("Please enter e-mail.");
		document.getElementById("emailid").focus();
		return false;
	}
	else
	{
		if(isEmail(email) == false)
		{
			alert("Please enter valid e-mail.");
			document.getElementById("emailid").focus();
			return false;
		}
	}
if(document.frmcontact.tel.value.split(" ").join("").length == 0)
{
	alert("Please enter telephone number.");
	document.getElementById("tel").focus();
	return false;
}
return true;
}

function IsNumber(Expression)
{
	Expression = Expression.toLowerCase();
	RefString = ".0123456789";

	if (Expression.length < 1) 
		return (false);
	var count =0;
	for (var i = 0; i < Expression.length; i++) 
	{
		var ch = Expression.substr(i, 1)
		var a = RefString.indexOf(ch, 0)
		if (a == -1)
			return (false);
		if(ch=='.')	
			count++;
		if(count>1)	
			return false;
	}
	return(true);
}


function isEmail(str) 
{
  // are regular expressions supported?
  var supported = 0;
  if (window.RegExp) {
	var tempStr = "a";
	var tempReg = new RegExp(tempStr);
	if (tempReg.test(tempStr)) supported = 1;
  }
  if (!supported) 
	return (str.indexOf(".") > 2) && (str.indexOf("@") > 0);
	  var r1 = new RegExp("(@.*@)|(\\.\\.)|(@\\.)|(^\\.)");
	  var r2 = new RegExp("^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,3}|[0-9]{1,3})(\\]?)$");
	  return (!r1.test(str) && r2.test(str));
}