function validate()
 {
    var contact=document.form2.contact.value;
	var email=document.form2.email.value;
	var comment=document.form2.comment.value;
	
	if(contact=="")
	    {
		    alert("Enter your full name please");
		    document.form2.contact.focus();
		    return false;
	    }
	if(email=="")
	    {
		    alert(" Enter mail id please");
		    document.form2.email.focus();
		    return false;
	    }

	if(email!="")
		{
			apos=email.indexOf("@"); 
			dotpos=email.lastIndexOf(".");
			lastpos=email.length-1;
			if (apos<1 || dotpos-apos<2 || lastpos-dotpos>3 || lastpos-dotpos<2) 
				{
					alert("Invalid email Id");
					document.form2.email.focus();
					return false;
				}
		}
	if(comment=="")
	    {
		    alert("Enter your comment please");
		    document.form2.comment.focus();
		    return false;
	    }
   else
		return true;
  }