/*************
 * 注册菜单显示函数
 **************/
function registerMenuFunction()
{
	document.getElementById("products_uc").onmouseover=function(){showMenu("sm_rj");};
	document.getElementById("products_uc").onmouseout=function(){hiddenMenu("sm_rj");};

	document.getElementById("rujiao").onmouseover=function(){showMenu("ssm_rj");};
	document.getElementById("rujiao").onmouseout=function(){hiddenMenu("ssm_rj");};
	
	document.getElementById("manhuitan").onmouseover=function(){showMenu("ssm_mht");};
	document.getElementById("manhuitan").onmouseout=function(){hiddenMenu("ssm_mht");};
	
	document.getElementById("paigujia").onmouseover=function(){showMenu("ssm_pgj");};
	document.getElementById("paigujia").onmouseout=function(){hiddenMenu("ssm_pgj");};
	
	document.getElementById("products_c").onmouseover=function(){showMenu("sm_rj2");};
	document.getElementById("products_c").onmouseout=function(){hiddenMenu("sm_rj2");};
}

//显示菜单
function showMenu(menuId)
{
	var obj = document.getElementById(menuId);
	if(obj == null){
		return;
	}
	obj.style.display="block"; 
}

//隐藏菜单
function hiddenMenu(menuId)
{
		var obj = document.getElementById(menuId);
		if(obj == null){
			return;
		}
		obj.style.display="none"; 
}

//修改健康睡眠菜单:参数level表示目录级别
function changeSleepMenuLink(level){
	  var dir = ["./sleep_knowledge/","../sleep_knowledge/","../../sleep_knowledge/"];
    var d=document.getElementById("aid");
    var Name=navigator.appName;
    var st="Netscape";
    if(Name == st){
        d.href=dir[level]+"sleep1.php";
    }
    else{
        d.href=dir[level]+"sleep1.php";
    }
}