function em(e){
	return document.getElementById(e);
}
function get_skin() {
//	 hd('mu')
cook=Get_Cookie('tools_skin')
if(cook) em('sklink').href="skin/new_"+cook+".css"
}

function chg() {
	em('mu').style.display=''
	sHtml=''
	em('mu').innerHTML=sHtml
}
function hd(e) {
	em(e).style.display='none'
}
function ssk(a) {
	em('sklink').href="skin/new_"+a+".css"
	Set_Cookie('tools_skin',a,63072000,'/')
}
function Get_CookieVal(offset)
{
var endstr = document.cookie.indexOf (";", offset);
if (endstr == -1)
endstr = document.cookie.length;
return unescape(document.cookie.substring(offset, endstr));
}
function Set_Cookie(name, value)
{
var expdate = new Date()
var argv = Set_Cookie.arguments;
var argc = Set_Cookie.arguments.length;
var expires = (argc > 2) ? argv[2] : null;
var path = (argc > 3) ? argv[3] : null;
var domain = (argc > 4) ? argv[4] : null;
var secure = (argc > 5) ? argv[5] : false;
if(expires!=null) expdate.setTime(expdate.getTime() + ( expires * 1000 ))
document.cookie = name + "=" + escape (value) +((expires == null) ? "" : ("; expires="+ expdate.toGMTString()))
+((path == null) ? "" : ("; path=" + path)) +((domain == null) ? "" : ("; domain=" + domain))
+((secure == true) ? "; secure" : "");
}
function Get_Cookie(name)
{
var arg = name + "=";
var alen = arg.length;
var clen = document.cookie.length;
var i = 0;
while (i < clen)
{
var j = i + alen;
if (document.cookie.substring(i, j) == arg)
return Get_CookieVal (j);
i = document.cookie.indexOf(" ", i) + 1;
if (i == 0) break;
}
return null;
}

function selected(obj,class1,class2){
	//第一个使用 this  
	//第二个是要改变的样式
	//第三个为默认null
	var classname = obj.className;
	if (classname==class1){
		obj.className=class2
	}else{
		obj.className=class1	
	}
}
function bgstyle(obj){
var tbobj = document.getElementById("tubiao");
var tbl = tbobj.getElementsByTagName("tr").length-1;
	for(i=0;i<=tbl;i++)
	{
	  if (tbobj.getElementsByTagName("tr")[i].className=="bg")
	   {
		tbobj.getElementsByTagName("tr")[i].className=""
	   }
	}
	obj.className="bg"
}