var backgr1="theedoek_1.gif" var backgr2="theedoek_2.gif" var backgr3="theedoek_3.gif" var backgr4="theedoek_4.gif" var cur=Math.round(6*Math.random()) if (cur<=1) backgr=backgr1 else if (cur<=4) backgr=backgr3 else if (cur<=5) backgr=backgr4 else backgr=backgr2 document.write('')