/*	buttondown is called to display "down" state on a navbar
		buttonover is called to display the "hover" state on a navbar
		buttonup is called to display the "up" state on a navbar 	*/

if (document.images) {
    homebuttonup       = new Image();
    homebuttonup.src   = "images/nav/homebtn.gif" ;
    homebuttonover     = new Image() ;
    homebuttonover.src = "images/nav/homebtn_over.gif" ;
    homebuttondown     = new Image() ;
    homebuttondown.src = "images/nav/homebtn_over.gif" ;
		
    aboutbuttonup       = new Image();
    aboutbuttonup.src   = "images/nav/aboutbtn.gif" ;
    aboutbuttonover     = new Image() ;
    aboutbuttonover.src = "images/nav/aboutbtn_over.gif" ;
    aboutbuttondown     = new Image() ;
    aboutbuttondown.src = "images/nav/aboutbtn_over.gif" ;
				
    directorybuttonup       = new Image();
    directorybuttonup.src   = "images/nav/directorybtn.gif" ;
    directorybuttonover     = new Image() ;
    directorybuttonover.src = "images/nav/directorybtn_over.gif" ;
    directorybuttondown     = new Image() ;
    directorybuttondown.src = "images/nav/directorybtn_over.gif" ;
		
    schedulebuttonup       = new Image();
    schedulebuttonup.src   = "images/nav/schedulebtn.gif" ;
    schedulebuttonover     = new Image() ;
    schedulebuttonover.src = "images/nav/schedulebtn_over.gif" ;
    schedulebuttondown     = new Image() ;
    schedulebuttondown.src = "images/nav/schedulebtn_over.gif" ;

    sponsorsbuttonup       = new Image();
    sponsorsbuttonup.src   = "images/nav/sponsorsbtn.gif" ;
    sponsorsbuttonover     = new Image() ;
    sponsorsbuttonover.src = "images/nav/sponsorsbtn_over.gif" ;
    sponsorsbuttondown     = new Image() ;
    sponsorsbuttondown.src = "images/nav/sponsorsbtn_over.gif" ;

    contactbuttonup       = new Image();
    contactbuttonup.src   = "images/nav/contactbtn.gif" ;
    contactbuttonover     = new Image() ;
    contactbuttonover.src = "images/nav/contactbtn_over.gif" ;
    contactbuttondown     = new Image() ;
    contactbuttondown.src = "images/nav/contactbtn_over.gif" ;
}
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" );
    }
}
function buttonover ( buttonname )
{
    if (document.images) {
      document[ buttonname ].src = eval( buttonname + "over.src" );
    }
}