function ryouko()
  {
     var girl = Math.random();
     girl = girl*200;
     girl = Math.ceil(girl);

     if( girl<=70 )
         document.write("<iframe name='jgfss' src='http://click.dtiserv2.com/Click24/001-23-4205' width=460 height=80 scrolling='no' border=0 frameborder=0></iframe>");
     else if( girl<=120 )
         document.write("<iframe name='jgfss' src='http://click.dtiserv2.com/Click101/001-23-4205' width=460 height=80 scrolling='no' border=0 frameborder=0></iframe>");
	 else if( girl<=150 )
         document.write("<iframe name='jgfss' src='http://click.dtiserv2.com/Click52/001-23-4205' width=460 height=80 scrolling='no' border=0 frameborder=0></iframe>");
     else if( girl<=180 )
         document.write("<iframe name='jgfss' src='http://click.dtiserv2.com/Click104/001-23-4205' width=490 height=130 scrolling='no' border=0 frameborder=0></iframe>");
	 else
         document.write("<iframe name='jgfss' src='http://click.dtiserv2.com/Click2/001-23-4205' width=492 height=130 scrolling='no' border=0 frameborder=0></iframe>");
  }