function getbg() { var bg=new Array() bg[0]="background=/images/bg1.gif"; bg[1]="background=/images/bg2.gif"; bg[2]="background=/images/bg3.gif"; bg[3]="background=/images/bg4.gif"; var whichbg=Math.floor(Math.random()*(bg.length)); var bodytag=''; document.write(bodytag); } getbg();