function validate_required(field,alerttxt){
	with (field){
		if (value==null||value==""){
			alert(alerttxt);
			return false;
		}else{
			return true;
		}
	}
}
	
function validate_form(thisform){
	with(thisform){
		if(validate_required(email,"Please Enter an Email")==false){
			email.focus();
			return false;
		}
		if(validate_required(name,"Please Enter a Name")==false){
			name.focus();
			return false;
		}
		if(validate_required(comments,"Please Enter a Comment")==false){
			comments.focus();
			return false;
		}
	}
	return true;
}