dlugosc=obraz.length;
tr=0;



for (nr=0; nr<dlugosc; nr++)
{

if (obraz[nr] < 10) {var ob = ("000" + obraz[nr] + ".jpg")};
if (obraz[nr] >= 10 && obraz[nr] < 100) {var ob = ("00" + obraz[nr] + ".jpg")};
if (obraz[nr] >= 100) {var ob = ("0" + obraz[nr] + ".jpg")};

if (tr==0) document.write("<tr>");

document.write("<td width='25%' align='center' valign='top'><p align='center'><img border='0' src='" + ob + "'><br><font face='Verdana' size='1'>");

document.write("<a href='b_duze/" + ob + "'target='_blank'>1600x1200</a></font><br>");

document.write("<font face='Verdana' size='1'><a href='duze/" + ob + "' 		target='_blank'>800x600</a><br><br></font></td>");

tr=(tr+1);
if (tr==3) {document.write("</tr>"); tr=0};


};

if (tr<3) document.write("</tr>");