// JavaScript Document

function showHide(id_choosen, id_hidden){
		if(document.getElementById(id_choosen).value==3) 
			document.getElementById(id_hidden).style.display="block";
		else
			document.getElementById(id_hidden).style.display="none";
}
function showHideElement(id_to_show,id_to_hide) {
		document.getElementById(id_to_show).style.display="block";
		document.getElementById(id_to_hide).style.display="none";
}