// JavaScript Document
//验证搜索
function CheckNull(){
if (document.form.Keyword.value==""){
	alert("the product keywords can't be empty!");
	document.form.Keyword.focus()
	return false;
}
return true;
}
//菜单效果
//function at_display(x)
//{
//  win = window.open();
//  for (var i in x) win.document.write(i+' = '+x[i]+'<br>');
//}
function at_show_aux(parent, child)
{
  var p = document.getElementById(parent);
  var c = document.getElementById(child);

  var top  = (c["at_position"] == "y") ? p.offsetHeight - 3 -18 : 0;
  var left = (c["at_position"] == "x") ? p.offsetWidth +50 : 147;

  for (; p; p = p.offsetParent)
  {
    top  += p.offsetTop;
    left += p.offsetLeft;
  }

  c.style.position   = "absolute";
  c.style.top        = top +'px';
  c.style.left       = left+'px';
  c.style.visibility = "visible";
}
function at_show()
{
  p = document.getElementById(this["at_parent"]);
  c = document.getElementById(this["at_child" ]);

  at_show_aux(p.id, c.id);

  clearTimeout(c["at_timeout"]);
}
function at_hide()
{
  c = document.getElementById(this["at_child"]);

  c["at_timeout"] = setTimeout("document.getElementById('"+c.id+"').style.visibility = 'hidden'", 33);
}
function at_click()
{
  p = document.getElementById(this["at_parent"]);
  c = document.getElementById(this["at_child" ]);

  if (c.style.visibility != "visible") at_show_aux(p.id, c.id);
  else c.style.visibility = "hidden";

  return false;
}
function at_attach(parent, child, showtype, position, cursor)
{
  p = document.getElementById(parent);
  c = document.getElementById(child);

  p["at_parent"]     = p.id;
  c["at_parent"]     = p.id;
  p["at_child"]      = c.id;
  c["at_child"]      = c.id;
  p["at_position"]   = position;
  c["at_position"]   = position;

  c.style.position   = "absolute";
  c.style.visibility = "hidden";

  if (cursor != undefined) p.style.cursor = cursor;

  switch (showtype)
  {
    case "click":
      p.onclick     = at_click;
      p.onmouseout  = at_hide;
      c.onmouseover = at_show;
      c.onmouseout  = at_hide;
      break;
    case "hover":
      p.onmouseover = at_show;
      p.onmouseout  = at_hide;
      c.onmouseover = at_show;
      c.onmouseout  = at_hide;
      break;
  }
}
//菜单相关JS
navHover = function() { 
var lis = document.getElementById("navmenu").getElementsByTagName("LI"); 
for (var i=0; i<lis.length; i++) { 
lis[i].onmouseover=function() { 
this.className+=" iehover"; 
} 
lis[i].onmouseout=function() { 
this.className=this.className.replace(new RegExp(" iehover\\b"), ""); 
} 
} 
} 
if (window.attachEvent) window.attachEvent("onload", navHover); 
//
function MM_findObj(n, d) { //v4.0
var p,i,x;if(!d) d=document;if((p=n.indexOf("?"))>0&&parent.frames.length){
d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
if(!x && document.getElementById) x=document.getElementById(n); return x;}
function MM_showHideLayers() { //v3.0
var i,p,v,obj,args=MM_showHideLayers.arguments;
for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v='hide')?'hidden':v; }
obj.visibility=v; }}
//showhidelayer

function mOvr(src, cOvr) 
{if (!src.contains(event.fromElement)) {src.style.cursor = "default";src.bgColor = cOvr;}}
function mOut(src, cOut) 
{if (!src.contains(event.toElement)) {src.style.cursor = "default";src.bgColor = cOut;}}