Ciao
Andreas
Ts,ts,ts !!
<script>function aufloesung(){
var breite=screen.width;
if (breite>=1100)
{alert ("Resolution 1152*864 or higher");}
else if (breite>=1000 && screen.width<1100)
{alert ("Resolution 1024*768");}
else if (breite>=800 && screen.width<1000)
{alert ("Resolution 800*600");}
else{alert ("Resolution 640*480");}
}</script><body onload="aufloesung()">