function Validate() {

    var invalid = " ";	

    if(document.forms[0].name.value=="")
        {alert("Please input your name");
		 document.forms[0].name.focus();
		 return;	
		}	
    if(document.forms[0].email.value=="")
        {alert("Please input your e-mail");
		 document.forms[0].email.focus();
		 return;	
		}	
    if(document.forms[0].subject.value=="")
        {alert("Please input subject of your message");
		 document.forms[0].subject.focus();
		 return;	
		}	
    if(document.forms[0].note.value=="")
        {alert("Please input your message");
		 document.forms[0].note.focus();
		 return;	
		}	
	else 
	{
	document.forms[0].submit();
	}
	
}