var p="/img/";
	
preload_array=[];

arr=[];
arr[1]=39;
arr[2]=20;
arr[3]=19;
arr[4]=20;

function preloadImage(imageFile,a)
{
  var i=new Image()
  i.src=p+imageFile;
  preload_array[a]=i;
}

	preloadImage("flag01_on.png",1);
	preloadImage("flag02_on.png",2);

function check_buttons(e, vkl)
{
if (vkl==1) 
{document.images["flag0"+e].src=preload_array[e].src;}
else 
{document.images["flag0"+e].src=p+"flag0"+e+"_off.png";}
}


function check_buttons1(e, vkl)
{
if (vkl==1) 
{
document.getElementById('menu'+e).style.backgroundPosition="0 "+arr[e];}
else
{document.getElementById('menu'+e).style.backgroundPosition="0 0";}
}