function chPic(img)
{
  var navimg = document.images[img];

  if(navimg.src.indexOf("_b") != -1)
  {
    navimg.src = navimg.src.replace("_b.","_g.");
  }
  else
  {
    navimg.src = navimg.src.replace("_g.","_b.");
  }
}

function an(element){
		clear_info("b1");
		clear_info("b2");
		clear_info("b3");
		clear_info("b4");
		clear_info("b5");
		clear_info("b6");
		clear_info("b7");
		clear_info("b8");
		clear_info("b9");
		clear_info("b10");
call_info(element);
	
		
			
			
	
	
}


function clear_info(element){
	document.getElementById(element).style.visibility='hidden';
	return;	
}

function call_info(element){
	document.getElementById(element).style.visibility='visible';
	return;	
}