function $(item){
	return document.getElementById(item);
}

function switchTab(identify,index,count) {
	for(i=1;i<=count;i++) {
		var CurTabObj = $("Tab_"+identify+"_"+i);
		var CurListObj = $("List_"+identify+"_"+i) ;
		if (i != index) {
			fRemoveClass(CurTabObj , "upH2") ;
			fRemoveClass(CurListObj , "upBox") ;
		}
	}
	fAddClass($("Tab_"+identify+"_"+index),"upH2") ;
	fAddClass($("List_"+identify+"_"+index),"upBox") ;
}

function fAddClass(XEle, XClass) {
  if(!XClass) throw new Error("XClass 不能为空!");
  if(XEle.className!="") {
    var Re = new RegExp("\\b"+XClass+"\\b\\s*", "");
    XEle.className = XEle.className.replace(Re, "");
	var OldClassName = XEle.className.replace(/^\s+|\s+$/g,"") ;
	if (OldClassName == "" ) {
		 XEle.className = XClass;
	}
	else {
		XEle.className = OldClassName + " " + XClass;
	}
  }
  else XEle.className = XClass;
}

function fRemoveClass(XEle, XClass) {
  if(!XClass) throw new Error("XClass 不能为空!");
  var OldClassName = XEle.className.replace(/^\s+|\s+$/g,"") ;
  if(OldClassName!="") {
    var Re = new RegExp("\\b"+XClass+"\\b\\s*", "");
    XEle.className = OldClassName.replace(Re, "");
  }
}