function PreLoad()
{
b1 = new Image();
b1.src = "gfx/b-portrait1.gif";
b2 = new Image();
b2.src = "gfx/b-index1.gif";
b3 = new Image();
b3.src = "gfx/b-leistungen1.gif";
b4 = new Image();
b4.src = "gfx/b-referenzen1.gif";
b5 = new Image();
b5.src = "gfx/b-jobs1.gif";
b6 = new Image();
b6.src = "gfx/b-kontakt1.gif";
}



function Hi(o1)
 {
 n = o1.substring(o1.lastIndexOf("/")+1,o1.lastIndexOf("."));
 gfx = "gfx/b-"+n+"1.gif"; 
 document.images[n].src = gfx;
 }

function Lo(o1)
 {
 n = o1.substring(o1.lastIndexOf("/")+1,o1.lastIndexOf("."));
 gfx = "gfx/b-"+n+"0.gif"; 
 document.images[n].src = gfx;
 }