function changeImage(filename,title,text)
{
  document.mainimage.src = filename;
  document.mainimage.title = title;
  document.getElementById("info").innerHTML = text;
}

function preloader()
{
     // counter
     var i = 0;

     // create object
     imageObj = new Image();

     // set image list
     images = new Array();
     images[0]="nav_focus_home.gif"
     images[1]="nav_blur_home.gif"
     images[2]="nav_hover_home.gif"
     images[4]="nav_focus_cottages.gif"
     images[5]="nav_blur_cottages.gif"
     images[6]="nav_hover_cottages.gif"
     images[7]="nav_focus_tariff.gif"
     images[8]="nav_blur_tariff.gif"
     images[9]="nav_hover_tariff.gif"
     images[10]="nav_focus_scenery.gif"
     images[11]="nav_blur_scenery.gif"
     images[12]="nav_hover_scenery.gif"
     images[13]="nav_focus_contact.gif"
     images[14]="nav_blur_contact.gif"
     images[15]="nav_hover_contact.gif"

     // start preloading
     for(i=0; i<=15; i++) 
     {
          imageObj.src=images/images[i];
     }

}