function toggle_menu(obj){
		if(document.getElementById('submenu_'+obj).style.visibility == 'hidden'){
			document.getElementById('submenu_'+obj).style.visibility = 'visible';
			$("#submenu_"+obj).css({"height": "1px"});
			document.getElementById('menu_'+obj).className = 'active';
			$("#submenu_"+obj).animate({ height: "100px"},500);
			if(document.getElementById('submenu_1').style.visibility == 'visible' && document.getElementById('submenu_1') != document.getElementById('submenu_'+obj))
			{
				$("#submenu_1").animate({ height: "1px"},500,"linear",function(){
					document.getElementById('submenu_1').style.visibility = 'hidden';
					document.getElementById('menu_1').className = '';  
				});
			}
			else if(document.getElementById('submenu_2').style.visibility == 'visible' && document.getElementById('submenu_2') != document.getElementById('submenu_'+obj))
			{
				$("#submenu_2").animate({ height: "1px"},500,"linear",function(){
					document.getElementById('submenu_2').style.visibility = 'hidden';
					document.getElementById('menu_2').className = '';  
				});
			}
			else if(document.getElementById('submenu_3').style.visibility == 'visible' && document.getElementById('submenu_3') != document.getElementById('submenu_'+obj))
			{
				$("#submenu_3").animate({ height: "1px"},500,"linear",function(){
					document.getElementById('submenu_3').style.visibility = 'hidden';
					document.getElementById('menu_3').className = '';  
				});
			}
			/*
			else if(document.getElementById('submenu_4').style.visibility == 'visible' && document.getElementById('submenu_4') != document.getElementById('submenu_'+obj))
			{
				$("#submenu_4").animate({ height: "1px"},500,"linear",function(){
					document.getElementById('submenu_4').style.visibility = 'hidden';
					document.getElementById('menu_4').className = '';  
				});
			}*/
			
		}else{
			$("#submenu_"+obj).animate({ height: "1px"},500,"linear",function(){
				document.getElementById('submenu_'+obj).style.visibility = 'hidden';
				document.getElementById('menu_'+obj).className = '';  
			});
		}
}