function redirectPage() {
var y;
if (self.innerHeight) // all except Explorer
{
	y = self.innerHeight;
}
else if (document.documentElement && document.documentElement.clientHeight)
	// Explorer 6 Strict Mode
{
	y = document.documentElement.clientHeight;
}
else if (document.body) // other Explorers
{
	y = document.body.clientHeight;
}
var url800x600 = "<img src='upload/layout/blank.gif' alt='Wechselbildchen' name='Bildchen' width='1' height='0' border='0' id='Bildchen'/>";
var url1024x768 = "<img src='upload/layout/dieHalle.gif' alt='Wechselbildchen' name='Bildchen' width='100' height='88' border='0' id='Bildchen'/>";
if ((y <= 600))
document.write(url800x600);
else document.write(url1024x768);
}