xp风格菜单[2]

     imgobj.style.left = "-1px";
     imgobj.style.top = "-1px";
    }
   }
  }
  else if(cmd == 'out') {
   obj.children(0).classname = "ltdexit";
   obj.children(1).classname = "mtdexit";
   obj.children(2).classname = "rtdexit";
   if(imgobj)
   {
    if(imgobj.tagname.touppercase() == "img")
    {
     imgobj.style.left = "0px";
     imgobj.style.top = "0px";
    }
   }
  }
 }
 catch (e) {}
}

function showmenu()
{
 var x, y, w, h, ox, oy;
 
 x = event.clientx;
 y = event.clienty;
 
 var obj = document.getelementbyid("rightmenu");
 if (obj == null)
  return true;
 
 ox = document.body.clientwidth;
 oy = document.body.clientheight;
 if(x > ox || y > oy)
  return false;
 w = obj.offsetwidth;
 h = obj.offsetheight;
 if((x + w) > ox)
   x = x - w;
 if((y + h) > oy)
  y = y - h;
 
 obj.style.posleft = x + document.body.scrollleft;
 obj.style.postop = y + document.body.scrolltop;
 obj.style.visibility = "visible";
 
 return false;
}
function hidemenu()
{
 if(event.button == 0)
 {
  var obj = document.getelementbyid("rightmenu");
  if (obj == null)
   return true;
  obj.style.visibility = "hidden";
  obj.style.posleft = 0;
  obj.style.postop = 0;
 }
}

function writestyle()
{
 var strstyle = "";
 
 strstyle += "<style type=text/css>";
 strstyle += "table {font-family: \"tahoma\",\"verdana\",\"宋体\"; font-size: 9pt}";
 strstyle += ".mtdfocus {background-color: #ccccff; border-bottom: #000000 1px solid; border-top: #000000 1px solid; cursor: hand}";
 strstyle += ".mtdexit {background-color: #ffffff; border-bottom: #ffffff 1px solid; border-top: #ffffff 1px solid}";
 strstyle += ".ltdfocus {background-color: #ccccff; border-bottom: #000000 1px solid; border-top: #000000 1px solid; border-left: #000000 1px solid; cursor: hand}";
 strstyle += ".ltdexit {background-color: #d0d0ce; border-bottom: #d0d0ce 1px solid; border-top: #d0d0ce 1px solid; border-left: #d0d0ce 1px solid}";
 strstyle += ".rtdfocus {background-color: #ccccff; border-bottom: #000000 1px solid; border-top: #000000 1px solid; border-right: #000000 1px solid; cursor: hand}";
 strstyle += ".rtdexit {background-color: #ffffff; border-bottom: #ffffff 1px solid; border-top: #ffffff 1px solid; border-right: #ffffff 1px solid}";
 strstyle += "</style>";
 
 document.write(strstyle);
}

function makemenu()
{
 var mymenu, item;
 
 var homepage_cmd = "this.style.behavior='url(#default#homepage)';this.sethomepage('http://gamethinking.yeah.net/'); return false;";
 var favorate_cmd = "window.external.addfavorite('http://gamethinking.yeah.net/','游戏思想'); return false;";
 var viewcode_cmd = "window.location = 'view-source:' + window.location.href";
 
 mymenu = new contextmenu();
 
 item = new contextitem("返回主页", "images/main.gif", "top.location='http://gamethinking.yeah.net/';", "menu");
 mymenu.additem(item);
 
 item = new contextitem("设为主页", "images/myhome.gif", homepage_cmd, "menu");
 mymenu.additem(item);
 
 item = new contextitem("添加到收藏夹", "images/fav_add.gif", favorate_cmd, "menu");
 mymenu.additem(item);
 
 item = new contextitem("联系作者", "images/mail.gif", "location.href='mailto:avlee@163.com'", "menu");
 mymenu.additem(item);
 
 item = new contextitem("", "", "", "separator");
 mymenu.additem(item);
 
 item = new contextitem("察看源码", "images/edit.gif", viewcode_cmd, "menu");
 mymenu.additem(item);
 
 mymenu.show(this.document);

 delete item;
 delete mymenu;
}

function togglemenu(isenable)
{
 if(isenable)
  document.oncontextmenu = showmenu;
 else
  document.oncontextmenu = new function() {return true;};
}

writestyle();
makemenu();
document.onclick = hidemenu;
document.oncontextmenu = showmenu;