//ÏÂÃæΪÇл»
function panelChange(i){
	for(j=1;j<=5;j++){
		if(i!=j){
			//alert(j)
			G("menu_"+j).setAttribute("src","images/menu"+j+"_out.gif");
			hidden("panel_"+j);
			
		}
		else{
			G("menu_"+i).setAttribute("src","images/menu"+i+"_on.gif");
			show("panel_"+i);
		}
	}

}
function G() {
  	var elements = new Array();
  	for (var i = 0; i < arguments.length; i++) {
    	var element = arguments[i];
    	if (typeof element == 'string')
      		element = document.getElementById(element);
    	if (arguments.length == 1)
      		return element;
    	elements.push(element);
  	}
  	return elements;
}

function isNull(obj){
	if (typeof(obj) == "undefined")
	  return true;
	  
	if (obj == undefined)
	  return true;
	  
	if (obj == null)
	  return true;
	 
	return false;
}
function hidden(id)
{
	G(id).style.display="none";
}

function show(id)
{
	G(id).style.display="";
}