/****tab menu****/
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  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 && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}


function $t(){}
$t.prototype = {
	$do : function(menus,divs,openClass,closeClass){
		var _this = this;
		if(menus.length != divs.length)
		{alert("˵ݲһ!");
			return false;}				
		for(var i = 0 ; i < menus.length ; i++)
		{	_this.$(menus[i]).value = i;
		
			_this.$(menus[i]).onmouseover = function(){
				for(var j = 0 ; j < menus.length ; j++)
				{	_this.$(menus[j]).className = closeClass[j];
					_this.$(divs[j]).style.display = "none";}
					
				_this.$(menus[this.value]).className = openClass[this.value];
				
				_this.$(divs[this.value]).style.display = "block";				
			}}},
	$ : function(oid){	if(typeof(oid) == "string")
		return document.getElementById(oid);
		return oid;	}}				
		
		
window.onload = function(){
	var $tabs = new $t();
	
	$tabs.$do(["a1","a2","a3"],["b1","b2","b3"],["bq_1","bq_1","bq_1"],["bq_2","bq_2","bq_2"]);
	$tabs.$do(["c1","c2","c3"],["d1","d2","d3"],["bq_3","bq_3","bq_3"],["bq_4","bq_4","bq_4"]);
	$tabs.$do(["e1","e2","e3","e4"],["f1","f2","f3","f4"],["bq_5","bq_5","bq_5","bq_5"],["bq_6","bq_6","bq_6","bq_6"]);
	$tabs.$do(["j1","j2","j3","j4"],["k1","k2","k3","k4"],["bq_5","bq_5","bq_5","bq_5"],["bq_6","bq_6","bq_6","bq_6"]);
	$tabs.$do(["m1","m2","m3"],["n1","n2","n3"],["bq_3","bq_3","bq_3"],["bq_4","bq_4","bq_4"]);
    MM_preloadImages('images/32_pic_2.gif','images/32_pic_4.gif','images/32_pic_6.gif','images/32_pic_8.gif','images/32_pic_10.gif');
}