if (document.images)
   {
     homeOn		=	new Image();
     homeOn.src		=	"images/buttons/hover/home.jpg";  
     homeOff		=	new Image();
     homeOff.src	=	"images/buttons/default/home.jpg";
	 
     contactOn		=	new Image();
     contactOn.src	=	"images/buttons/hover/contact.jpg";  
     contactOff		=	new Image();
     contactOff.src	=	"images/buttons/default/contact.jpg";

     f_homeOn		=	new Image();
     f_homeOn.src	=	"images/buttons/hover/footer_home.jpg";  
     f_homeOff		=	new Image();
     f_homeOff.src	=	"images/buttons/default/footer_home.jpg";
	 
     f_contactOn	=	new Image();
     f_contactOn.src	=	"images/buttons/hover/footer_contact.jpg";  
     f_contactOff	=	new Image();
     f_contactOff.src	=	"images/buttons/default/footer_contact.jpg";
   }

function aprinde(imgName)
 {
    if (document.images)
    {
      imgOn		=	eval(imgName + "On.src");
      document[imgName].src= imgOn;
    }
 }

function stinge(imgName)
 {
   if (document.images)
    {
      imgOff=eval(imgName + "Off.src");
      document[imgName].src= imgOff;
    }
 }