if (document.images) {
	
// main banner.........
    cell1up       = new Image();
    cell1up.src   = "images/main_banner_1.jpg" ;
    cell1down     = new Image() ;
    cell1down.src = "images/main_banner_1colour.jpg" ;
	
	cell2up       = new Image();
    cell2up.src   = "images/main_banner_2.jpg" ;
    cell2down     = new Image() ;
    cell2down.src = "images/main_banner_2colour.jpg" ;
	
	cell3up       = new Image();
    cell3up.src   = "images/main_banner_3.jpg" ;
    cell3down     = new Image() ;
    cell3down.src = "images/main_banner_3colour.jpg" ;

    cell5up       = new Image();
    cell5up.src   = "images/main_banner_5.jpg" ;
    cell5down     = new Image() ;
    cell5down.src = "images/main_banner_5colour.jpg" ;

    cell6up       = new Image();
    cell6up.src   = "images/main_banner_6.jpg" ;
    cell6down     = new Image() ;
    cell6down.src = "images/main_banner_6colour.jpg" ;
	
//other buttons......... 	
	quoteup       = new Image();
    quoteup.src   = "images/request quote.jpg" ;
    quotedown     = new Image() ;
    quotedown.src = "images/request quote2.jpg" ;
	
	flashup       = new Image();
    flashup.src   = "images/flash.jpg" ;
    flashdown     = new Image() ;
    flashdown.src = "images/flash2.jpg" ;
	
	logoup       = new Image();
    logoup.src   = "images/logo.jpg" ;
    logodown     = new Image() ;
    logodown.src = "images/logo2.jpg" ;
	
	graphicsup       = new Image();
    graphicsup.src   = "images/graphics.jpg" ;
    graphicsdown     = new Image() ;
    graphicsdown.src = "images/graphics2.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" );
    }
}