function validate()
{

	if(document.cfrm.name.value=="")
	{
		alert("Please enter the name!");
		document.cfrm.name.focus();
		return false;
	}

	if(document.cfrm.email.value!="")
    {
			if (isWhitespace(document.cfrm.email.value))
			{
				alert("Please enter email address.");
				document.cfrm.email.focus();
			}
		else
			{
				if(isValidEmail(document.cfrm.email.value)==false)
				{
				 alert("Please enter valid email address.");
				 document.cfrm.email.focus();
				 return false;
				}
			}
   }
    else
	{
		alert("Please enter email address.");
		 document.cfrm.email.focus();
		 return false;
	} 
	
	if(document.cfrm.comment.value=="")
	{
		alert("Please enter the comment!");
		document.cfrm.comment.focus();
		return false;
	}
return true;
}