function HidDiv(name, number){
   for(i=1;i<=number;i++){
    if (document.getElementById(name+"_show"+i)!=null) {
        document.getElementById(name+"_show"+i).style.display = "none";
    }
   }
}

function ShowDiv(name, current){
    if (document.getElementById(name+"_show"+current)!=null) {
        document.getElementById(name+"_show"+current).style.display = "block";
    }
}

function HidTab(name, number){
   for(i=1;i<=number;i++){
    if (document.getElementById(name+"_tab"+i)!=null) {
        document.getElementById(name+"_tab"+i).className = "off";
    }
   }
}

function ShowTab(name, current){
    if (document.getElementById(name+"_tab"+current)!=null) {
        document.getElementById(name+"_tab"+current).className = "on";
    }
}

function ChangeTab(name, number, current){
    HidTab(name, number);
    ShowTab(name, current);
    HidDiv(name, number);
    ShowDiv(name, current);
}



function selectTag(showContent,selfObj){
	// 操作标签
	var tag = document.getElementById("tags").getElementsByTagName("li");
	var taglength = tag.length;
	for(i=0; i<taglength; i++){
		tag[i].className = "";
	}
	selfObj.parentNode.className = "selectTag";
	// 操作内容
	for(i=0; j=document.getElementById("tagContent"+i); i++){
		j.style.display = "none";
	}
	document.getElementById(showContent).style.display = "block";	
}


function ChangeTitle(name)
{
    document.title = name + "-天天学习网";
}