var lo;
function swapImage(imgName, newImg){
	if ((navigator.appName == 'Netscape' && parseFloat(navigator.appVersion) >= 3) || (parseFloat(navigator.appVersion) >= 4)){
		eval('document.getElementById(imgName).src = "fileadmin/dtlegal/img/photo-building' + newImg + '.jpg"');
	}
	return newImg;
}
function prevImg(no) { if(no) { res = no-1; } else { res = 0; } if(res <= 0) { res = 3; } return res; }
function nextImg(no) { if(no) { res = no+1; } else { res = 2; } if(res > 3) { res = 1; } return res; }