function showtab(m,n,count){

 if(m==1){
  for(var i=1;i<=count;i++){
  if (i==n){   
   getObject(m+'_'+i).className = 'ibox_tabon';
   getObject('tab_'+m+'_'+i).style.display='block';
   }
  else {
   getObject(m+'_'+i).className = 'ibox_tab';
   getObject('tab_'+m+'_'+i).style.display='none';
  }
 }
 }

}
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;
    }
} // getObject

//以下是导航菜单效果JS
function $(id) {
    return document.getElementById(id);
}

function showMenu (baseID, divID) {
    baseID = $(baseID);
    divID  = $(divID);
    if (showMenu.timer) clearTimeout(showMenu.timer);
	hideCur();
    divID.style.display = 'block';
	showMenu.cur = divID;

    if (! divID.isCreate) {
        divID.isCreate = true;
        //divID.timer = 0;
        divID.onmouseover = function () {
            if (showMenu.timer) clearTimeout(showMenu.timer);
			hideCur();
            divID.style.display = 'block';
        };

        function hide () {
            showMenu.timer = setTimeout(function () {divID.style.display = 'none';}, 1000);
        }

        divID.onmouseout = hide;
        baseID.onmouseout = hide;
    }
	function hideCur () {
		showMenu.cur && (showMenu.cur.style.display = 'none');
	}
}