function chk()
{

 
	if (document.form11.fname.value=="")
	{
	alert("Enter name");
	document.form11.fname.focus();
	return false;
	}
	else if (document.form11.lname.value=="")
	{
	alert("Enter your Contact");
	document.form11.lname.focus();
	return false;
	}
	var urmail=document.form11.email.value;
	var at=/\@/;
	var dot=/\./;
	if(document.form11.email.value=="")
	{
	alert("Enter your mail id");
	document.form11.email.focus();
	}
	else if(urmail.search(at)==-1)
	{
	alert("Re-enter mail id");
	document.form11.email.focus();
	}
	else if(urmail.search(dot)==-1)
	{
	alert("Enter valid mail id");
	document.form11.email.focus();
	}
		else
	{
	document.form11.action="joinus.php";
	document.form11.submit();
	}
	
}