var popUp = null;
	var chasm = screen.availWidth;
	var mount = screen.availHeight;
	var w = 0;
	var h = 0;
	function openWindow(url,w,h) {
	
	popUp = window.open(url,'','width=' + w + ',height=' + h + ',left=' + ((chasm - w - 10) * .5) + ',top=' + ((mount - h - 30) * .5));
	}

	if (document.images) {
  image1on = new Image();
  image1on.src = "pics/m1_on.gif";

  image2on = new Image();
  image2on.src = "pics/m2_on.gif";

  image3on = new Image();
  image3on.src = "pics/m3_on.gif";

  image4on = new Image();
  image4on.src = "pics/m4_on.gif";

  image5on = new Image();
  image5on.src = "pics/m5_on.gif";
  
  image6on = new Image();
  image6on.src = "pics/m6_on.gif";
  
  image7on = new Image();
  image7on.src = "pics/m7_on.gif";
  
  image8on = new Image();
  image8on.src = "pics/m8_on.gif";
  
  image9on = new Image();
  image9on.src = "pics/m9_on.gif";
  
  image10on = new Image();
  image10on.src = "pics/m10_on.gif";

  image11on = new Image();
  image11on.src = "pics/m11_on.gif";

  image12on = new Image();
  image12on.src = "pics/m12_on.gif";
  
  imagegbon = new Image();
  imagegbon.src = "pics/gb_on.gif";

  image1off = new Image();
  image1off.src = "pics/m1.gif";

  image2off = new Image();
  image2off.src = "pics/m2.gif";

  image3off = new Image();
  image3off.src = "pics/m3.gif";

  image4off = new Image();
  image4off.src = "pics/m4.gif";

  image5off = new Image();
  image5off.src = "pics/m5.gif";
  
  image6off = new Image();
  image6off.src = "pics/m6.gif";
  
  image7off = new Image();
  image7off.src = "pics/m7.gif";

  image8off = new Image();
  image8off.src = "pics/m8.gif";
  
  image9off = new Image();
  image9off.src = "pics/m9.gif";

  image10off = new Image();
  image10off.src = "pics/m10.gif";
  
  image11off = new Image();
  image11off.src = "pics/m11.gif";

  image12off = new Image();
  image12off.src = "pics/m12.gif";
  
  imagegboff = new Image();
  imagegboff.src = "pics/gb.gif";


}

function changeImages() {
  if (document.images) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
    }
  }
}