if (document.images) {
    decor1off       = new Image();
    decor1off.src   = "images/decor1_off.jpg" ;
    decor1on     = new Image() ;
    decor1on.src = "images/decor1_on.jpg" ;
    
    decor2off       = new Image();
    decor2off.src   = "images/decor2_off.jpg" ;
    decor2on     = new Image() ;
    decor2on.src = "images/decor2_on.jpg" ;
    
    decor3off       = new Image();
    decor3off.src   = "images/decor3_off.jpg" ;
    decor3on     = new Image() ;
    decor3on.src = "images/decor3_on.jpg" ;

    decor4off       = new Image();
    decor4off.src   = "images/decor4_off.jpg" ;
    decor4on     = new Image() ;
    decor4on.src = "images/decor4_on.jpg" ;

    decor5off       = new Image();
    decor5off.src   = "images/decor5_off.jpg" ;
    decor5on     = new Image() ;
    decor5on.src = "images/decor5_on.jpg" ;

    decor6off       = new Image();
    decor6off.src   = "images/decor6_off.jpg" ;
    decor6on     = new Image() ;
    decor6on.src = "images/decor6_on.jpg" ;

    decor7off       = new Image();
    decor7off.src   = "images/decor7_off.jpg" ;
    decor7on     = new Image() ;
    decor7on.src = "images/decor7_on.jpg" ;

    decor8off       = new Image();
    decor8off.src   = "images/decor8_off.jpg" ;
    decor8on     = new Image() ;
    decor8on.src = "images/decor8_on.jpg" ;

    
}
function linkon( imagename )
{
   if (document.images) {
       document[ imagename ].src = eval( imagename + "on.src" );
       document[ 'mainimage' ].src = ("images/" + imagename + "_over.jpg");
    }
}
function linkoff( imagename )
{

    if (document.images) {
      document[ imagename ].src = eval( imagename + "off.src" );
      document[ 'mainimage' ].src = ("images/" + "decor_copy_P.gif") ;
 
    }
}