通用建站系统里的一段很好的javascript代码

<script language="JavaScript1.2">
function Td_Over(Element1){
Element1.className = 'TdOver';
}
function Td_Out(Element1){
Element1.className = 'TdOut';
}
function Td_Down(Element1){
Element1.className = 'TdDown';
}
function Td_Click(No){
var url;
if (No == 0){
url = "Manage_Main.asp";
}else if (No == 1){
url = "ArticleManage.asp";
}else if (No == 2){
url = "Manage_Eshop.asp";
}else if (No == 3){
url = "UserManage.asp";
}else if (No == 4){
url = "Manage_News.asp";
}else if (No == 5){
url = "Manage_Book.asp";
}else if (No == 6){
url = "Manage_honor.asp";
}else if (No == 7){
url = "Manage_job.asp";
}else if (No == 8){
url = "Manage_sale.asp";
}else if (No == 9){
url = "VoteManage.asp";
}else if (No == 10){
url = "Manage_Link.asp";
}else if (No == 11){
url = "Loginout.asp";
}else if (No == 12){
url = "Manage.asp";
}else if (No == 13){
url = "Viewuser.asp";
}else if (No == 14){
url = "Down_Manage.asp";
}

location.href=url;
}
</script>