// Netscape 3.0 compatibility test (for javascript image swapping)
	compat = false;
	if( parseInt( navigator.appVersion ) >= 3 ) {
		compat = true; 
	}

// cache images for quick swapping
	if( compat ) {

		l_toolbar = new Image();
		l_toolbar.src = "/img/toolbar/l_toolbar.gif";
		
		i_search = new Image();
		i_search.src = "/img/toolbar/i_search.gif";
		io_search = new Image();
		io_search.src = "/img/toolbar/io_search.gif";
		l_search = new Image();
		l_search.src = "/img/toolbar/l_search.gif";
		
		i_print = new Image();
		i_print.src = "/img/toolbar/i_print.gif";
		io_print = new Image();
		io_print.src = "/img/toolbar/io_print.gif";
		l_print = new Image();
		l_print.src = "/img/toolbar/l_print.gif";
		
		i_email = new Image();
		i_email.src = "/img/toolbar/i_email.gif";
		io_email = new Image();
		io_email.src = "/img/toolbar/io_email.gif";
		l_email = new Image();
		l_email.src = "/img/toolbar/l_email.gif";
		
		i_save = new Image();
		i_save.src = "/img/toolbar/i_save.gif";
		io_save = new Image();
		io_save.src = "/img/toolbar/io_save.gif";
		l_save = new Image();
		l_save.src = "/img/toolbar/l_save.gif";
		
		i_help = new Image();
		i_help.src = "/img/toolbar/i_help.gif";
		io_help = new Image();
		io_help.src = "/img/toolbar/io_help.gif";
		l_help = new Image();
		l_help.src = "/img/toolbar/l_help.gif";
		
	}
	

// swap images using the cached images

function changeImg(x, y) {
	if( compat ) {
		document.images[x].src=eval(y+'.src'); 
		}
	}