// JavaScript Document

function showHide(whichLayer){
	var divPrefix="drop";
	var taretDiv;
	var i=0;
	for(i=1;i<=7;i++){
		 taretDiv=divPrefix+i;
		 if(taretDiv==whichLayer){
			document.getElementById(taretDiv).style.visibility="visible" 
		 }else{
			 document.getElementById(taretDiv).style.visibility="hidden" 
		 }
	}
}
function hideMenu(whichLayer){
	document.getElementById(whichLayer).style.visibility="hidden" 
	
}
function delayHide(whichLayer){
	var t= setTimeout("hideMenu('"+whichLayer+"')",80000);
	
}