var activeMainEl = null;
	var activeSubEl = null;
	function onOver(idnr){
		var mainEl = document.getElementById('m'+idnr);
		var subEl = document.getElementById('s'+idnr);
		if(mainEl.className != "spaceron"){
			//activate main nav
			mainEl.className = "spaceron";
			activeMainEl = mainEl;
			//show sub nav
			subEl.className = "";
			activeSubEl = subEl;
		}
	}
	function onOut(){
		if(activeMainEl != null){
				//alert(activeMainEl)
			//deactivate main nav
			activeMainEl.className = "";
			activeMainEl = null;
			//hide sub nav
			activeSubEl.className = "hidden";
			activeSubEl = null;			
		}
	}