function check()
{
 var frm;
 frm = document.enroll;
	if(enroll.name.value == "")
	{
		alert("Enter Your Name please");
		enroll.name.focus() ;
		return false;
	}
	if(enroll.address.value == "")
	{
		alert("Enter your Contact Number");
		enroll.address.focus();
		return false;
	}
	if(enroll.phone.value == "")
	{
		alert("Enter your Contact Number");
		enroll.txtphone.focus();
		return false;
	}
	if(enroll.mobile.value == "")
	{
		alert("Enter your Contact Number");
		enroll.mobile.focus();
		return false;
	}
	if(enroll.mail.value == "")
	{
		alert("Enter your correct email address");
		enroll.mail.focus();
		return false;
	}
	 str1=enroll.mail.value;
	 if (str1 != "")
	 {
		s= str1.lastIndexOf("@");
			if (s == -1 )
			{
				alert("Invalid E-mail ID!");
				enroll.mail.focus();
				return false;
			}
			s1= str1.lastIndexOf(".");
			if (s1 == -1 )
			{
				alert("Invalid E-mail Address !");
				enroll.mail.focus();
				return false;
			}
	}
	return true;
}