function getUrlParam( url, name, value ) {
 var pos_s = url.indexOf( name + "=" );
 if( pos_s < 0 ) return value;
 var url = url.substring( pos_s + name.length + 1 );
 var pos_e = url.indexOf( '&' );
 if( pos_e < 0 ) return decodeURIComponent( url );
 return decodeURIComponent( url.substring( 0, pos_e ));
}
// via: http://yamachan-cs.blogspot.com/2007/01/js-url.html

function getSwfURL(swf) {
 var vNo = getUrlParam( location.search, "no", null );
 if(! document.getElementById) return;
 if(!vNo) {
  return swf + '?index_flg=1';
 } else {
  return swf + '?index_flg=1&amp;no='+vNo;
 }
}