function random_msg( ) {
var r ;
var xx = new Array( ) ;


xx.push( '<img src="http://www.hplabo.com/common/images/tpl/catch/labo_catch.png" width="790" height="200" alt="WE ARE HPLABO!!" title="WE ARE HPLABO" />' ) ;



r = Math.floor( Math.random( ) * xx.length ) ;
document.write( xx[r] ) ;

}