var load2=true;
var load3=true;
var load4=true;

function contextTabShowDiv(obj,num,len)
{
  var iSetID="i"+obj+num;
  if ( num==2 && !load2){
     try{document.getElementById(iSetID).src="1.html"}catch(e){};
	 if(obj == 'ntes'){load2=true;}
  }else if ( num==3 && !load3){
     try{document.getElementById(iSetID).src="3.html"}catch(e){};
     if(obj == 'ntes'){load3=true;}
  }else if ( num==4 && !load4){
     try{document.getElementById(iSetID).src="4.asp"}catch(e){};
      if(obj == 'ntes'){load4=true;}
  }
  
  for(var id=1;id<=len;id++)
  {
    var setID=obj+id;
    var setnavID=obj+"nav"+id;
    if(id==num){
  	try{document.getElementById(setID).style.display="block"}catch(e){};
  	try{document.getElementById(setnavID).className="contextTabOn"}catch(e){};
    }else{
  	try{document.getElementById(setID).style.display="none"}catch(e){};
  	try{document.getElementById(setnavID).className="contextTabOff"}catch(e){};
    }
  }  
}



function showhide(layer_ref) { 
var state = 'none'; 

	if (state == 'block') { 
		state = 'none'; 
	} 
	else { 
		state = 'block'; 
	} 
	if (document.all) { //IS IE 4 or 5 (or 6 beta) 
		eval( "document.all." + layer_ref + ".style.display = state"); 
	} 
	if (document.layers) { //IS NETSCAPE 4 or below 
		document.layers[layer_ref].display = state; 
	} 
	if (document.getElementById &&!document.all) { 
		hza = document.getElementById(layer_ref); 
		hza.style.display = state; 
	} 
}