var cumi = { 

//top topbread
	top_topbread : function(){
		var lv = document.getElementById("glbm");
		var lvt= document.getElementById("glb");
		var lc = document.getElementById("chlm");
		var lct= document.getElementById("chl");
        var lct= document.getElementById("chl");
		if(lv){
			lv.onmouseover= function(){	lvt.style.display = "block"; }
			lvt.onmouseout= function(){	lvt.style.display = "none";	}
			lv.onmouseout= function(){ lvt.style.display = "none"; }
		}
		if(lc){
			lc.onmouseover= function(){	lct.style.display = "block"; }
			lct.onmouseout= function(){	lct.style.display = "none";	}
			lc.onmouseout= function(){ lct.style.display = "none"; }
		}
	},

//main nav
	main_nav : function(){
		var lisp = document.getElementById("main_nav");
		if(lisp) {
			var lis = lisp.getElementsByTagName("li");
			for (var i=0; i<lis.length; i++) {
				lis[i].onmouseover=function() {	this.className+="iehover"; }
				lis[i].onmouseout=function() { this.className=" "; }
			}
		}
	},

//left nav
	left_nav : function(){
		var obj = document.getElementById("nav_l");
		if(obj) {
				obj.onclick = function(e){
				var e = e || window.event;
				var tg = e.target || e.srcElement; 
				if(tg.className==="arr"){ 
					var tp = cumi.nextNode(tg);
					if(tp.tagName==="UL"){
						if(tp.style.display === "block"){
							tp.style.display = "none";
							tg.src = "http://www.cumi.cn/images/ar_right.gif";
							var tpr = cumi.prevNode(tg).firstChild
							var tprc= tpr.src.lastIndexOf(".gif");
							var sctpi = tpr.src.substring(tprc-3);
							if (sctpi=== "_on.gif"){
								var sctpr = tpr.src.substring(0,tprc-3);
								tpr.src = sctpr + ".gif";
							}
						}else{
							tp.style.display ="block"; 
							tg.src = "http://www.cumi.cn/images/ar_down.gif";
							var tpr = cumi.prevNode(tg).firstChild
							var tprc= tpr.src.lastIndexOf(".gif");
							var sctpi = tpr.src.substring(tprc-3);
							if (sctpi=== "_on.gif"){
								var sctpr = tpr.src.substring(0,tprc-3);
								tpr.src = sctpr + ".gif";
							}
							else{
								var sctpr = tpr.src.substring(0,tprc);
								tpr.src = sctpr + "_on.gif";
							}
						}
					}
				}
			}
        }
	},

//news list hover
	news_list_hover : function(){
		var objlp = document.getElementById("lt_hov");
		if(objlp) { 
			var objl = objlp.getElementsByTagName("li");
			for(var i=0,j=objl.length;i<j;i++){
					objl[i].onmouseover = function(){
						this.className = this.className=== "on"?" hov":"hov";
					}
					objl[i].onmouseout = function(){
						this.className = this.className=== "hov"?"":"on";
					}
			}
		 }
	},
	
//dl01 showhide
     dl01_showhide :function (){
       var dl01 = document.getElementById("dl01");
       if(!dl01){return;}
       var dl01_dts = dl01.getElementsByTagName("dt");
	    for(var i=0,j=dl01_dts.length;i<j;i++){
          dl01_dts[i].onclick=function (){
              for(var i=0,j=dl01_dts.length;i<j;i++){
               dl01_dts[i].className ="";
               cumi.nextNode(dl01_dts[i]).className="";
			  }
            cumi.nextNode(this).className ="show";
            this.className ="current";
           }

		 }
   },

//playswf
    playswf :function (sFile,sWidth,sHeight){
		   document.write('<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,29,0" width="'+ sWidth +'" height="'+ sHeight +'">  ');
		   document.write(' <param name="movie" value="'+ sFile +'">  ');
		   document.write(' <param name="quality" value="high">  ');
		   document.write(' <param name="wmode" value="transparent">  ');
		   document.write(' <embed src="'+ sFile +'" quality="high" wmode="transparent" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="'+ sWidth +'" height="'+ sHeight +'"></embed>  ');
		   document.write('</object> ');
	  },

//products_nav
	 products_nav:function (){
		var sfEl  = document.getElementById("prolist_nav");
		if(!sfEl){return;}
		var sfEls = sfEl.getElementsByTagName("LI");
		for (var i=0,j=sfEls.length; i<j; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" show";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" show\\b"), "");
		}
	  }
	 },

//nextNode
	nextNode : function(elem) {
		do {
			elem = elem.nextSibling;
		} while ( elem && elem.nodeType != 1 );
		return elem;
	},
//prevNode
	prevNode : function( elem ) {
		do {
			elem = elem.previousSibling;
		} while ( elem && elem.nodeType != 1 );
		return elem;
	},
//firstNode
	firstNode :function ( elem ) {
		elem = elem.firstChild;
		return elem && elem.nodeType != 1 ?	next ( elem ) : elem;
	},

//addEvent
	addEvent: function(elm, evType, fn, useCapture){
		if (elm.addEventListener) 
		{
			elm.addEventListener(evType, fn, useCapture);
			return true;
		} else if (elm.attachEvent) {
			var r = elm.attachEvent('on' + evType, fn);
			return r;
		} else {
			elm['on' + evType] = fn;
		}
	},
	
// location
	loca : function(){
		
		if (!document.getElementById("nav_l")) {return false}

		var h = window.location.href;
		var o = document.getElementById("nav_l").getElementsByTagName("ul");
	}
}
cumi.addEvent(window,"load",cumi.top_topbread,false);
cumi.addEvent(window,"load",cumi.main_nav,false);
cumi.addEvent(window,"load",cumi.left_nav,false);
cumi.addEvent(window,"load",cumi.news_list_hover,false);
cumi.addEvent(window,"load",cumi.dl01_showhide,false);
cumi.addEvent(window,"load",cumi.products_nav,false);
cumi.addEvent(window,"load",cumi.loca,false);