//<script language="JavaScript" type="text/javascript"> 
<!-- 
var elementy = new Array( 

// Tu wpisz kolejne elementy: 

'<IMG SRC="2010/20100204/thumbs/DSCN2108.jpg">',
'<IMG SRC="2010/20100204/thumbs/DSCN2110.jpg">',
'<IMG SRC="2010/20100204/thumbs/DSCN2111.jpg">',
'<IMG SRC="2010/20100204/thumbs/DSCN2112.jpg">',
'<IMG SRC="2010/20100204/thumbs/DSCN2114.jpg">',
'<IMG SRC="2010/20100204/thumbs/DSCN2115.jpg">',
'<IMG SRC="2010/20100204/thumbs/DSCN2116.jpg">',
'<IMG SRC="2010/20100204/thumbs/DSCN2117.jpg">',
'<IMG SRC="2010/20100204/thumbs/DSCN2118.jpg">',
'<IMG SRC="2010/20100204/thumbs/DSCN2119.jpg">',
'<IMG SRC="2010/20100204/thumbs/DSCN2121.jpg">',
'<IMG SRC="2010/20100204/thumbs/DSCN2125.jpg">',
'<IMG SRC="2010/20100204/thumbs/DSCN2126.jpg">',
'<IMG SRC="2010/20100204/thumbs/DSCN2127.jpg">',
'<IMG SRC="2010/20100204/thumbs/DSCN2128.jpg">'
); 

var liczba = 0; 
do { liczba = Math.random(); } while (liczba >= 1); 
liczba = Math.floor(liczba * elementy.length); 

document.write(elementy[liczba]); 
//--> 
//</script>