if (document.images) {
    enterbuttonup       = new Image();
    enterbuttonup.src   = "images/enter.jpg" ;
    enterbuttondown     = new Image();
    enterbuttondown.src = "images/enter_hv.jpg" ;

    contactbuttonup       = new Image();
    contactbuttonup.src   = "../images/contact_chris.jpg" ;
    contactbuttondown     = new Image();
    contactbuttondown.src = "../images/contact_chris_hv.jpg" ;
	
	backgroundcurbuttonup       = new Image();
    backgroundcurbuttonup.src   = "../images/menu_background_cur.jpg" ;
    backgroundcurbuttondown     = new Image();
    backgroundcurbuttondown.src = "../images/menu_background_cur_hv.jpg" ;
	
	backgroundbuttonup       = new Image();
    backgroundbuttonup.src   = "../images/menu_background.jpg" ;
    backgroundbuttondown     = new Image();
    backgroundbuttondown.src = "../images/menu_background_hv.jpg" ;
	
	designcurbuttonup       = new Image();
    designcurbuttonup.src   = "../images/menu_design_cur.jpg" ;
    designcurbuttondown     = new Image();
    designcurbuttondown.src = "../images/menu_design_cur_hv.jpg" ;
	
	designbuttonup       = new Image();
    designbuttonup.src   = "../images/menu_design.jpg" ;
    designbuttondown     = new Image();
    designbuttondown.src = "../images/menu_design_hv.jpg" ;
	
	photocurbuttonup       = new Image();
    photocurbuttonup.src   = "../images/menu_photo_cur.jpg" ;
    photocurbuttondown     = new Image();
    photocurbuttondown.src = "../images/menu_photo_cur_hv.jpg" ;
	
	photobuttonup       = new Image();
    photobuttonup.src   = "../images/menu_photo.jpg" ;
    photobuttondown     = new Image();
    photobuttondown.src = "../images/menu_photo_hv.jpg" ;
	
}
function buttondown( buttonname )
{
    if (document.images) {
      document[ buttonname ].src = eval( buttonname + "down.src" );
    }
}
function buttonup( buttonname )
{
    if (document.images) {
      document[ buttonname ].src = eval( buttonname + "up.src" );
    }
}