function mouseOver(image)
{
   var src   = image.src;

   if (src.indexOf("_on.") != -1) 
   {
      image.src = src.replace(/_on\./i, "_off.");
   }
   else
   {
      image.src = src.replace(/_off\./i, "_on.");
   }


}

function mouseOut(image)
{
	
   var src   = image.src;
    if (src.indexOf("_on.") != -1) 
   {
      image.src = src.replace(/_on\./i, "_off.");
   }
   else
   {
      image.src = src.replace(/_off\./i, "_on.");
   }

}