function getObject(objectId) {
    if(document.getElementById && document.getElementById(objectId)) {
	// W3C DOM
	return document.getElementById(objectId);
    } else if (document.all && document.all(objectId)) {
	// MSIE 4 DOM
	return document.all(objectId);
    } else if (document.layers && document.layers[objectId]) {
	// NN 4 DOM.. note: this won't find nested layers
	return document.layers[objectId];
    } else {
	return false;
    }
}

function mmenuURL()//主导航、二级导航显示函数
{
var thisURL = document.URL;
tmpUPage = thisURL.split( "/" );  
thisUPage_s = tmpUPage[ tmpUPage.length-2 ]; 
thisUPage_s= thisUPage_s.toLowerCase();//小写
//thisUPage=thisUPage.substring(0,4)
//alert (thisUPage_s);

		if(thisUPage_s=="127.0.0.1"||thisUPage_s=="www.21it.com"||thisUPage_s=="21it.com")
		{
			getObject("mm1").className="nav_on";
		}
		else if(thisUPage_s=="program"){
			getObject("mm2").className="nav_on";
		}
		else if(thisUPage_s=="product"){
			getObject("mm3").className="nav_on";
		}
		else if(thisUPage_s=="service"){
			getObject("mm4").className="nav_on";
		}
		else if(thisUPage_s=="news"){
			getObject("mm5").className="nav_on";
		}
		else if(thisUPage_s=="view"){
			getObject("mm6").className="nav_on";
		}
		else if(thisUPage_s=="cooperate"){
			getObject("mm7").className="nav_on";
		}
		else if(thisUPage_s=="about"){
			getObject("mm8").className="nav_on";
		}
		else if(thisUPage_s=="case"){
			getObject("mm9").className="nav_on";
		}
		else{
			getObject("mm1").className="nav_on";
		}
}
window.load=mmenuURL();


function showCnt(l,n){
			getObject("d"+l).style.display=""
			getObject("a"+l).onmouseout=function (){getObject("d"+l).style.display="none"}

}
function nTabs(thisObj,Num){
if(thisObj.className == "active")return;
var tabObj = thisObj.parentNode.id;
var tabList = document.getElementById(tabObj).getElementsByTagName("li");
for(i=0; i <tabList.length; i++)
{
  if (i == Num)
  {
   thisObj.className = "active"; 
      document.getElementById(tabObj+"_Content"+i).style.display = "block";
  }else{
   tabList[i].className = "normal"; 
   document.getElementById(tabObj+"_Content"+i).style.display = "none";
  }
} 
}