var n_word_files= 250;
file_n=  Math.floor( Math.random() * n_word_files );


var text= "<script src=\"words/sl_words0";

if( file_n < 10 )
  text= text + "00" + file_n.toString() + ".js\">";
else if( file_n < 100 )
  text= text + "0" + file_n.toString() + ".js\">";
else
  text= text + file_n.toString() + ".js\">";
text= text + "<\/script>";

document.write( text );