var d = document.images; 
var p; 
var y = 1;

for ( var x = 0; x < d.length; x++ )
{
	this_src = d[x].src;
	if ( this_src.indexOf ( "off" ) != -1 )  
	{  
		p = this_src.replace ( /off/gi, 'on' );
		d[d.length + y] = new Image ( ); 
		d[d.length + y].src = p; 
		y++;
		self.status = 'preloading : ' + p;  
	}
  }  
  self.status = '';

function update_link_image ( img, toggle )
{
	if ( document.images )
	{
		var thisPic = document.getElementById( 'link' + img );
		thisPic.src = "http://www.wcreplays.com/images/" + img.toLowerCase() + "_" + toggle + ".jpg";
	}
}