if (document.images)
   {

     image3= new Image;
     image3.src="pix/eerste-galerie.gif";  
     image4= new Image;
     image4.src="pix/eerste-info.gif";   
     image5= new Image;
     image5.src="pix/tweede-galerie.gif";  
     image6= new Image;
     image6.src="pix/tweede-home.gif";   
     image7= new Image;
     image7.src="pix/derde-info.gif";  
     image8= new Image;
     image8.src="pix/derde-home.gif";   
     image9= new Image;
     image9.src="pix/eerste-back.gif";
     image10= new Image;
     image10.src="pix/tweede-back.gif";  
     image11= new Image;
     image11.src="pix/derde-back.gif"; 
     image_off= new Image;
     image_off.src="pix/logolinksboven.jpg";  
   }

function change1(picName,imgName)
 {
   if (document.images)
    {
      imgOn=eval(imgName + ".src");
      document[picName].src= imgOn;
    }
 }
function turnoff(imgName)
 {
   if (document.images)
    {
      imgOff=eval(imgName + "off.src");
      document[imgName].src= imgOff;
    }
 }
 
function OpenMain(n) {
	window.open(n, "trefwoord", "width=340, height=339, toolbar=yes, scrollbars=no");
}