function preload(){
	bt1 = new Image(); bt1.src = "/shared/05/nav_n1.gif"; 
	bth1 = new Image(); bth1.src = "/shared/05/nav_h1.gif"; 

	bt2 = new Image(); bt2.src = "/shared/05/nav_n2.gif"; 
	bth2 = new Image(); bth2.src = "/shared/05/nav_h2.gif"; 

	bt3 = new Image(); bt3.src = "/shared/05/nav_n3.gif"; 
	bth3 = new Image(); bth3.src = "/shared/05/nav_h3.gif"; 

	bt4 = new Image(); bt4.src = "/shared/05/nav_n4.gif"; 
	bth4 = new Image(); bth4.src = "/shared/05/nav_h4.gif"; 

	bt5 = new Image(); bt5.src = "/shared/05/nav_n5.gif"; 
	bth5 = new Image(); bth5.src = "/shared/05/nav_h5.gif"; 

	bt6 = new Image(); bt6.src = "/shared/05/nav_n6.gif"; 
	bth6 = new Image(); bth6.src = "/shared/05/nav_h6.gif"; 

	bt7 = new Image(); bt7.src = "/shared/05/nav_n7.gif"; 
	bth7 = new Image(); bth7.src = "/shared/05/nav_h7.gif"; 

	bt8 = new Image(); bt8.src = "/shared/05/nav_n8.gif"; 
	bth8 = new Image(); bth8.src = "/shared/05/nav_h8.gif"; 

	bt9 = new Image(); bt9.src = "/shared/05/nav_n9.gif"; 
	bth9 = new Image(); bth9.src = "/shared/05/nav_h9.gif"; 

	bt10 = new Image(); bt10.src = "/shared/05/nav_n10.gif"; 
	bth10 = new Image(); bth10.src = "/shared/05/nav_h10.gif"; 

	bt11 = new Image(); bt11.src = "/shared/05/nav_n11.gif"; 
	bth11 = new Image(); bth11.src = "/shared/05/nav_h11.gif"; 

	bt12 = new Image(); bt12.src = "/shared/05/nav_n12.gif"; 
	bth12 = new Image(); bth12.src = "/shared/05/nav_h12.gif"; 

	bt13 = new Image(); bt13.src = "/shared/05/nav_n13.gif"; 
	bth13 = new Image(); bth13.src = "/shared/05/nav_h13.gif"; 

	bt14 = new Image(); bt14.src = "/shared/05/nav_n14.gif"; 
	bth14 = new Image(); bth14.src = "/shared/05/nav_h14.gif"; 

	bt15 = new Image(); bt15.src = "/shared/05/nav_n15.gif"; 
	bth15 = new Image(); bth15.src = "/shared/05/nav_h15.gif"; 

	bt16 = new Image(); bt16.src = "/shared/05/nav_n16.gif"; 
	bth16 = new Image(); bth16.src = "/shared/05/nav_h16.gif"; 

	bt17 = new Image(); bt17.src = "/shared/05/nav_n17.gif"; 
	bth17 = new Image(); bth17.src = "/shared/05/nav_h17.gif"; 

	bt18 = new Image(); bt18.src = "/shared/05/nav_n18.gif"; 
	bth18 = new Image(); bth18.src = "/shared/05/nav_h18.gif"; 

	bt19 = new Image(); bt19.src = "/shared/05/nav_n19.gif"; 
	bth19 = new Image(); bth19.src = "/shared/05/nav_h19.gif"; 

	bt20 = new Image(); bt20.src = "/shared/05/nav_n20.gif"; 
	bth20 = new Image(); bth20.src = "/shared/05/nav_h20.gif"; 

}

preload()

function changePic(Bildname,Bildobjekt) {
	document.images[Bildname].src = Bildobjekt.src;
}