// JavaScript Document

function infocenter(numl)
	{ 
	  var jj = document.getElementById("nr_jj");
	  var jx = document.getElementById("nr_jx");
	  var showjj = document.getElementById("mainjj");
	  var showjx = document.getElementById("mainjx");
	  var showfour = document.getElementById("mainfour");
		if(numl==1)
		{
		  jj.style.display="";
		  jx.style.display="none";
		  
		  showjj.className="jieda1_on";
		  showjx.className="jieda2_off1";
          showfour.className="wuxian_off1";
		  
		}
		  if(numl==2)
		{
		  jj.style.display="none";
		  jx.style.display="";
  
		  showjj.className="jieda1_off1";
		  showjx.className="jieda2_on";
          showfour.className="wuxian_off2"; 
		}
	 }