//function popup_video(id) {
	function hideLayer(whichLayer) {
		var menuGroup;
		if (document.getElementById) {
			// Standard method
			menuGroup = document.getElementById(whichLayer).style;
		} else if (document.all) {
			// For Old IE versions
			menuGroup = document.all[whichLayer].style;
		} else if (document.layers) {
			// For NN4
			menuGroup = document.layers[whichLayer].style;
		}
		menuGroup.display = menuGroup.display? "":"none";
	}
	function showLayer(whichLayer) {
		var menuGroup;
		if (document.getElementById) {
			// Standard method
			menuGroup = document.getElementById(whichLayer).style;
		} else if (document.all) {
			// For Old IE versions
			menuGroup = document.all[whichLayer].style;
		} else if (document.layers) {
			// For NN4
			menuGroup = document.layers[whichLayer].style;
		}
		menuGroup.display = menuGroup.display? "":"block";
	}
//}