document.getElementById('tab-2').style.display = 'none';
	document.getElementById('tab-3').style.display = 'none';
			
	obj = document.getElementById('tab-menu-1');
	if (obj.addEventListener) {
		obj.addEventListener('click', function () {
			document.getElementById('tab-2').style.display = 'none';
			document.getElementById('tab-3').style.display = 'none';
			document.getElementById('tab-menu-links').style.backgroundPosition = '0px 0px';
			document.getElementById('tab-1').style.display = 'block';
		}, false);
	} else if (obj.attachEvent) {
		obj.attachEvent('onclick', function () {
			document.getElementById('tab-2').style.display = 'none';
			document.getElementById('tab-3').style.display = 'none';
			document.getElementById('tab-menu-links').style.backgroundPosition = '0px 0px';
			document.getElementById('tab-1').style.display = 'block';
		});
	}

	obj = document.getElementById('tab-menu-2');
	if (obj.addEventListener) {
		obj.addEventListener('click', function () {
			document.getElementById('tab-1').style.display = 'none';
			document.getElementById('tab-3').style.display = 'none';
			document.getElementById('tab-menu-links').style.backgroundPosition = '0px -100px';
			document.getElementById('tab-2').style.display = 'block';
		}, false);
	} else if (obj.attachEvent) {
		obj.attachEvent('onclick', function () {
			document.getElementById('tab-1').style.display = 'none';
			document.getElementById('tab-3').style.display = 'none';
			document.getElementById('tab-menu-links').style.backgroundPosition = '0px -100px';
			document.getElementById('tab-2').style.display = 'block';
		});
	}
	
	obj = document.getElementById('tab-menu-3');
	if (obj.addEventListener) {
		obj.addEventListener('click', function () {
			document.getElementById('tab-2').style.display = 'none';
			document.getElementById('tab-1').style.display = 'none';
			document.getElementById('tab-menu-links').style.backgroundPosition = '0px -200px';
			document.getElementById('tab-3').style.display = 'block';
		}, false);
	} else if (obj.attachEvent) {
		obj.attachEvent('onclick', function () {
			document.getElementById('tab-2').style.display = 'none';
			document.getElementById('tab-1').style.display = 'none';
			document.getElementById('tab-menu-links').style.backgroundPosition = '0px -200px';
			document.getElementById('tab-3').style.display = 'block';
		});
	}