preload = 0; 

function swap(which_image,flip) 
{
   if (preload)
   {
      document[which_image].src=eval(which_image + "_" + flip + ".src");
   } 
}

   Menu01_off = new Image();
   Menu01_roll = new Image();
   Menu01_off.src = "images/brazil_off.gif";
   Menu01_roll.src = "images/brazil_on.gif";
   preload = 1;
   Menu02_off = new Image();
   Menu02_roll = new Image();
   Menu02_off.src = "images/aus_off.gif";
   Menu02_roll.src = "images/aus_on.gif";
   preload = 1;
   
function changeColorR(CellName,Switch){
	if(Switch){
		document.getElementById(CellName).style.background="#EBEFF1"
		document.getElementById(CellName).style.color="#00008B"
		document.getElementById(CellName).style.cursor="hand"
	}else{
		document.getElementById(CellName).style.background=""
		document.getElementById(CellName).style.color=""
	}
}