if (document.images)
   {
     pluson= new Image(35,35);
     pluson.src="Images/plus_black.gif";

     plusoff= new Image(35,35);
     plusoff.src="Images/plus.gif";

     minuson= new Image(35,35);
     minuson.src="Images/minus_black.gif";

     minusoff= new Image(35,35);
     minusoff.src="Images/minus.gif";

     editorialon= new Image(53,11);
     editorialon.src="Images/editorial_black.gif";

     editorialoff= new Image(53,11);
     editorialoff.src="Images/editorial.gif";

     exhibitionon= new Image(58,11);
     exhibitionon.src="Images/exhibition_black.gif";

     exhibitionoff= new Image(58,11);
     exhibitionoff.src="Images/exhibition.gif";

     commercialon= new Image(63,11);
     commercialon.src="Images/commercial_black.gif";

     commercialoff= new Image(63,11);
     commercialoff.src="Images/commercial.gif";

     portraiton= new Image(50,11);
     portraiton.src="Images/portrait_black.gif";

     portraitoff= new Image(50,11);
     portraitoff.src="Images/portrait.gif";

     videoon= new Image(32,11);
     videoon.src="Images/video_black.gif";

     videooff= new Image(32,11);
     videooff.src="Images/video.gif";

     contacton= new Image(46,11);
     contacton.src="Images/contact_black.gif";

     contactoff= new Image(46,11);
     contactoff.src="Images/contact.gif";
}

function lightup(imgName)
 {
   if (document.images)
    {
      imgOn=eval(imgName + "on.src");
      document.getElementById(imgName).src= imgOn;
    }
 }

function turnoff(imgName)
 {
   if (document.images)
    {
      imgOff=eval(imgName + "off.src");
      document.getElementById(imgName).src= imgOff;
    }
 }
function loadvideo(url) {
         var loadvideo = window.open('video.php','','scrollbars=no,menubar=no,height=100%,width=100%,resizable=no,toolbar=no,location=no,status=no');
}

function loadMain() {
         var load = window.open('main.php','','scrollbars=no,menubar=no,height=100%,width=100%,resizable=no,toolbar=no,location=no,status=no');
}