function newImage( imgSrc ){
 
 var imgName = new Image();
 imgName.src = imgSrc;
 
 return imgName;

}

function change(imgName, imgLoc)
{
 if ( document.images && (preloadFlag == true))
 {
 
   document[imgName].src = imgLoc ;
  
 }
}

var preloadFlag = false;
function loadImages()
{
 if (document.images)
 {
 
  //****Edit this list to include vertical rollover images ****
  //****Example: aboutus_over = newImage( "images/menu-aboutus-over.gif" );
  home_over = newImage("images/index_6_green.gif");
  about_over = newImage("images/index_7_green.gif");  
  facility_over = newImage("images/index_8_green.gif");
  directions_over = newImage("images/index_9_green.gif");
  services_over = newImage("images/index_10_green.gif");
  gallery_over = newImage("images/index_11_green.gif");
  contact_over = newImage("images/index_12_green.gif");
  manage_over = newImage("images/index_13m_green.gif");
  
  preloadFlag = true;
 }
}