if(top.frames.length > 0)
    top.location.href=self.location;
    
i01 = new Image();
i01.src = "misc/enter.gif"; 
i02 = new Image();
i02.src = "misc/enter2.gif"; 

function BildVeraendern(ImageName, ImageObjektName)
{
    document.images[ImageName].src = eval(ImageObjektName + ".src")
}