if (document.images) {
    btn1up       = new Image();
    btn1up.src   = "images/Index_06.jpg" ;
    btn1down     = new Image() ;
    btn1down.src = "images/BtnRoll_06.jpg" ;
	
	btn2up       = new Image();
    btn2up.src   = "images/Index_07.jpg" ;
    btn2down     = new Image() ;
    btn2down.src = "images/BtnRoll_07.jpg" ;
	
	btn3up       = new Image();
    btn3up.src   = "images/Index_08.jpg" ;
    btn3down     = new Image() ;
    btn3down.src = "images/BtnRoll_08.jpg" ;
	
	btn4up       = new Image();
    btn4up.src   = "images/Index_09.jpg" ;
    btn4down     = new Image() ;
    btn4down.src = "images/BtnRoll_09.jpg" ;
	
	btn5up       = new Image();
    btn5up.src   = "images/Index_10.jpg" ;
    btn5down     = new Image() ;
    btn5down.src = "images/BtnRoll_10.jpg" ;
	
	btn6up       = new Image();
    btn6up.src   = "images/Index_11.jpg" ;
    btn6down     = new Image() ;
    btn6down.src = "images/BtnRoll_11.jpg" ;
	
	btn7up       = new Image();
    btn7up.src   = "images/Index_12.jpg" ;
    btn7down     = new Image() ;
    btn7down.src = "images/BtnRoll_12.jpg" ;
	
	btn8up       = new Image();
    btn8up.src   = "images/Index_13.jpg" ;
    btn8down     = new Image() ;
    btn8down.src = "images/BtnRoll_13.jpg" ;
	
	btn9up       = new Image();
    btn9up.src   = "images/Index_14.jpg" ;
    btn9down     = new Image() ;
    btn9down.src = "images/BtnRoll_14.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" );
    }
}