var sub2;
var sub3;
var currentsub;


function opSub(item){
	
	sub2 = document.getElementsByTagName('div');
	for(i = 0; i < sub2.length; i++) {
		if(sub2[i].className=="submenu2"){
			sub2[i].style.display="none";	
		}
		}
	
currentsub=	document.getElementById(item);
currentsub.style.display='block';
}

function opSub1(item){
	
	sub3 = document.getElementsByTagName('div');
	for(i = 0; i < sub3.length; i++) {
		if(sub3[i].className=="submenu3"){
			sub3[i].style.display="none";	
		}
		}
	
currentsub=	document.getElementById(item);
currentsub.style.display='block';
}