function toggleMenu(objID) {
if (!document.getElementById) return;
var ob = document.getElementById(objID).style;
ob.display = (ob.display == 'block')?'none': 'block';
}
function toggleMenu1() {
	var ob = document.getElementById('menu1').style;
	var ob2 = document.getElementById('menu2').style;
	var ob3 = document.getElementById('menu3').style;
	var ob4 = document.getElementById('menu4').style;
	ob.display = (ob.display == 'block')?'none': 'block';
	ob2.display = 'none';
	ob3.display = 'none';
	ob4.display = 'none';
}
function toggleMenu2() {
	var ob = document.getElementById('menu1').style;
	var ob2 = document.getElementById('menu2').style;
	var ob3 = document.getElementById('menu3').style;
	var ob4 = document.getElementById('menu4').style;
	ob2.display = (ob2.display == 'block')?'none': 'block';
	ob.display = 'none';
	ob3.display = 'none';
	ob4.display = 'none';
}
function toggleMenu3() {
	var ob = document.getElementById('menu1').style;
	var ob2 = document.getElementById('menu2').style;
	var ob3 = document.getElementById('menu3').style;
	var ob4 = document.getElementById('menu4').style;
	ob3.display = (ob3.display == 'block')?'none': 'block';
	ob2.display = 'none';
	ob.display = 'none';
	ob4.display = 'none';
}
function toggleMenu4() {
	var ob = document.getElementById('menu1').style;
	var ob2 = document.getElementById('menu2').style;
	var ob3 = document.getElementById('menu3').style;
	var ob4 = document.getElementById('menu4').style;
	ob4.display = (ob4.display == 'block')?'none': 'block';
	ob2.display = 'none';
	ob3.display = 'none';
	ob.display = 'none';
}