var timecounter=0,timestamp=0;

//START THE MENU LOOP TO TIMEOUT SUBS
setInterval('menuloop()', 300);

function dropdown1(){

	//Hide menu DIV
	killsubs();
	//Reset timer
	timestamp=0;
	
	//show menu DIV
		document.getElementById("menua").style.visibility="visible";
}
function dropdown2(){

	//Hide menu DIV
	killsubs();
	//Reset timer
	timestamp=0;
	
	//show menu DIV
			document.getElementById("menub").style.visibility="visible";
}

//Here's the functions to hide the MENUS***************************************************
function killsubs(){

		timestamp=0;
		
			//document.getElementById("menub").style.visibility="hidden";
			//document.getElementById("menud").style.visibility="hidden";
			document.getElementById("menua").style.visibility="hidden";
			document.getElementById("menub").style.visibility="hidden";
}

function menuloop(){
	timecounter++;
	if(timestamp && timestamp < timecounter){
		killsubs();
	}
}
function onsub(){
	timestamp = 0;
}
function outsub(){
	timestamp = timecounter + 1;
}