// JavaScript Document
function OpenMenu(id){ 
	
	var submenu = document.getElementById(id);
	
	submenu.style.visibility = 'visible';
   
	var hiddenSubmenuLayer = document.createElement('div');
	hiddenSubmenuLayer.id = 'hiddenSubmenuLayer';
	hiddenSubmenuLayer.style.position = 'absolute';
	hiddenSubmenuLayer.style.top = '0';
	hiddenSubmenuLayer.style.left = '0';
	hiddenSubmenuLayer.style.width = '100%';
	hiddenSubmenuLayer.style.height = '300px';
	hiddenSubmenuLayer.style.zIndex = '1';
	submenu.style.zIndex = '10';
	var body = document.getElementById('bg_line');
	hiddenSubmenuLayer.onmouseover = function() {
		submenu.style.visibility = 'hidden';
		// delete this.onmouseover;
		this.parentNode.removeChild(this);
	};
	body.appendChild(hiddenSubmenuLayer);
}
function CloseMenu(id){
   document.getElementById( id ).style.visibility = 'hidden';
}