var num11 = 5;
var pic11;
var num12 = 5;
var pic12;
var num22 = 5;
var pic22;

var num13 = 16;
var pic13;
var num23 = 22;
var pic23;
var num33 = 22;
var pic33;

pic13 = Math.floor(Math.random() * num13) + 1;

pic23 = Math.floor(Math.random() * num23) + 1;
pic33 = pic23;
do { pic33 = Math.floor(Math.random() * num33) + 1;
} while (pic33 == pic23);

//alert(pic13+' '+pic23+' '+pic33);

document.write('<td width=190><img src=\"images/pic_13_'+pic13+'.jpg\" width=190 height=106><br></td>');
document.write('<td width=2><img src=\"images/invisible.gif\" width=2 height=1><br></td>');
document.write('<td width=183><img src="images/pic_23_'+pic23+'.jpg" width=183 height=106><br></td>');
document.write('<td width=2><img src=\"images/invisible.gif\" width=2 height=1><br></td>');
document.write('<td width=183><img src="images/pic_23_'+pic33+'.jpg" width=183 height=106><br></td>');