//this is for validate the comments.
function validate_register()
{
	var form = document.comments;
	var filter = /^([a-zA-Z0-9_.-])+@(([a-zA-Z0-9-])+.)+([a-zA-Z0-9]{2,4})+$/;
	
	if(form.name.value == '')
	{
		alert('Please Enter Name');
		form.name.focus();
		return false;
	}
	if(form.email.value == '')
	{
		alert('Please Enter Email Address');
		form.email.focus();
		return false;
	}
	if (!filter.test(form.email.value)) 
	{
		alert('Please Enter Valid Email Address');
		form.email.focus();
		return false;
	}
	if(form.comment.value == '')
	{
		alert('Please Enter Comments');
		form.comment.focus();
		return false;
	}
}