function popFoto(tImg, tWidth,tHeight)
{
	popWidth=tWidth+16;
	popHeight=tHeight+16;
	//hvis tWidth>clientwidth saa skal winduet vaere mindre og det samme med hojden			
	useScrollbars="yes";
	if (popWidth<screen.availWidth && popWidth<screen.availHeight)
	{			
		useScrollbars="yes";
	}
	else
	{
		popWidth=screen.availWidth;
		popWidth=screen.availHeight;
		useScrollbars="yes";
	}
	
	surl = '/u/show_img.php?img='+tImg+'&imgWidth='+tWidth+'&imgHeight='+tHeight;
	WindowXOffset = screen.width/2 - popWidth/2;
	WindowYOffset = screen.height/2 - popHeight/2 - 40;
	if(WindowYOffset < 0){
		WindowYOffset = 0;
	}
	

	window.open(surl,"Foto", "left=" + WindowXOffset + ",top=" + WindowYOffset + ",WIDTH="+popWidth+",HEIGHT="+popHeight+",menubar=no,location=no,toolbar=no,status=yes,scrollbars="+useScrollbars+",resizable=yes");

}