// JavaScript Document
	function ShowDiv(obj) {
	document.getElementById("b1").className="menu1On";
	document.getElementById("b2").className="menu1On";
	document.getElementById("b3").className="menu1On";
	document.getElementById("b4").className="menu1On";
	document.getElementById("b5").className="menu1On";
	document.getElementById("b6").className="menu1On";
	document.getElementById("b7").className="menu1On";
	for(var i=1; i<=7; i++) {									
		document.getElementById("daohang_" + i.toString()).style.display = "none";
	}
	document.getElementById("daohang_" + obj).style.display = "block";
    if(obj=="1")
		document.getElementById("b1").className="menu1Over";
	else if(obj=="2")
		document.getElementById("b2").className="menu1Over";
	else if(obj=="3")
		document.getElementById("b3").className="menu1Over";
	else if(obj=="4")
		document.getElementById("b4").className="menu1Over";
	else if(obj=="5")
		document.getElementById("b5").className="menu1Over";
	else if(obj=="6")
		document.getElementById("b6").className="menu1Over";
	else
		document.getElementById("b7").className="menu1Over";

}