function doPreview(thID){
	document.getElementById('preview').setAttribute("src","foto/"+thID+".jpg");
	}
	
function tabOn(tabID){
	document.getElementById(tabID).setAttribute("src","butt/"+tabID+"roll.gif");
	}

function tabOff(tabID){
	document.getElementById(tabID).setAttribute("src","butt/"+tabID+".gif");
	}

function goTo(pagID){
	document.location.href=pagID+".html";
	}

if (document.images)
    {
      preload_image_object = new Image();
      // set image url
      image_url = new Array();
      image_url[0] = "foto/001.jpg";
      image_url[1] = "foto/002.jpg";
      image_url[2] = "foto/003.jpg";
      image_url[3] = "foto/004.jpg";
      image_url[4] = "foto/005.jpg";
      image_url[5] = "foto/006.jpg";
      image_url[6] = "foto/007.jpg";
      image_url[7] = "foto/008.jpg";
      image_url[8] = "foto/009.jpg";
      image_url[9] = "foto/010.jpg";
      image_url[10] = "foto/011.jpg";
      image_url[11] = "foto/012.jpg";
      image_url[12] = "foto/013.jpg";
      image_url[13] = "foto/014.jpg";
      image_url[14] = "foto/015.jpg";
      image_url[15] = "foto/016.jpg";
      image_url[16] = "foto/017.jpg";
      image_url[17] = "foto/018.jpg";
      image_url[18] = "foto/019.jpg";
      image_url[19] = "foto/020.jpg";
      image_url[20] = "foto/021.jpg";
      image_url[21] = "foto/022.jpg";
      image_url[22] = "foto/023.jpg";
      image_url[23] = "foto/024.jpg";
      image_url[24] = "foto/025.jpg";
      image_url[25] = "foto/026.jpg";
      image_url[26] = "foto/027.jpg";
      image_url[27] = "foto/028.jpg";
      image_url[28] = "foto/029.jpg";
      image_url[29] = "foto/030.jpg";
      image_url[30] = "foto/031.jpg";
      image_url[31] = "foto/032.jpg";
      image_url[32] = "foto/033.jpg";

       var i = 0;
       for(i=0; i<=31; i++) 
         preload_image_object.src = image_url[i];
    }