function openPopup( myURL, myWidth, myHeight ) {
	popupWin = window.open( myURL, "popupWin", "width=" + myWidth + ",height=" + myHeight + ",dependent=yes,scrollbars=yes,resizable=yes,toolbar=yes" );
	popupWin.moveTo( 20, 20 );
	popupWin.focus();
}


function chirurgBack() {
	currentImage--;
	if( currentImage < 1 ) currentImage = 1;
	chirurgSwapImg();
}

function chirurgForward() {
	currentImage++;
	if( currentImage > imageCount ) currentImage = imageCount;
	chirurgSwapImg();
}

function chirurgZoom() {
	// thePrefix = escape( imagePrefix + "-" + currentImage );
	theSearch = imagePrefix + "," + currentImage + "," + imageCount;
	theURL = "zoom.html?" + theSearch;
	openPopup( theURL, 600, 480 );
}

function chirurgSwapImg() {
	document.images["bVorher"].src = "../../img/chirurg/thumbs/" + imagePrefix + "-" + currentImage + "-v.jpg";
	document.images["bNachher"].src = "../../img/chirurg/thumbs/" + imagePrefix + "-" + currentImage + "-n.jpg";
	if( document.all ) {
		if( currentImage > 1 ) {
			document.all.bBack.innerHTML = "<a href='javascript:chirurgBack()' class='ausfInfoLink'>Zur&uuml;ck</a>";
			document.all.bBackImg.innerHTML = "<a href='javascript:chirurgBack()'><img src='../../img/icon-pfeil-rew.gif' border='0'></a>";
		} else {
			document.all.bBack.innerHTML = "";
			document.all.bBackImg.innerHTML = "";
		}
		if( currentImage < imageCount ) {
			document.all.bForward.innerHTML = "<a href='javascript:chirurgForward()' class='ausfInfoLink'>Weiter</a>";
			document.all.bForwardImg.innerHTML = "<a href='javascript:chirurgForward()'><img src='../../img/icon-pfeil-fwd.gif' border='0'></a>";
		} else {
			document.all.bForward.innerHTML = "";
			document.all.ForwardImg.innerHTML = "";
		}
	} else if( document.getElementById ) {
		if( currentImage > 1 ) {
			document.getElementById( "bBack" ).innerHTML = "<a href='javascript:chirurgBack()' class='ausfInfoLink'>Zur&uuml;ck</a>";
			document.getElementById( "bBackImg" ).innerHTML = "<a href='javascript:chirurgBack()'><img src='../../img/icon-pfeil-rew.gif' border='0'></a>";
		} else {
			document.getElementById( "bBack" ).innerHTML = "";
			document.getElementById( "bBackImg" ).innerHTML = "";
		}
		if( currentImage < imageCount ) {
			document.getElementById( "bForward" ).innerHTML = "<a href='javascript:chirurgForward()' class='ausfInfoLink'>Weiter</a>";
			document.getElementById( "bForwardImg" ).innerHTML = "<a href='javascript:chirurgForward()'><img src='../../img/icon-pfeil-fwd.gif' border='0'></a>";
		} else {
			document.getElementById( "bForward" ).innerHTML = "";
			document.getElementById( "bForwardImg" ).innerHTML = "";
		}
	}
}


function zoomBack() {
	currentImage--;
	if( currentImage < 1 ) currentImage = 1;
	zoomSwapImg();
}

function zoomForward() {
	currentImage++;
	if( currentImage > imageCount ) currentImage = imageCount;
	zoomSwapImg();
}

function zoomSwapImg() {
	document.images["bVorher"].src = "../../img/chirurg/slides/" + imagePrefix + "-" + currentImage + "-v.jpg";
	document.images["bNachher"].src = "../../img/chirurg/slides/" + imagePrefix + "-" + currentImage + "-n.jpg";
	if( document.all ) {
		if( currentImage > 1 ) {
			document.all.bBack.innerHTML = "<table border='0' cellpadding='0' cellspacing='0'><tr><td class='infoLink'><a href='javascript:zoomBack()' class='infoLink'><img src='../../img/chirurg/icon-back.gif' width='18' height='18' border='0' alt=''></a></td><td class='infoLink'><a href='javascript:zoomBack()' class='infoLink'>&nbsp;&nbsp;Zurück</a></td></tr></table>";
		} else {
			document.all.bBack.innerHTML = "";
		}
		if( currentImage < imageCount ) {
			document.all.bForward.innerHTML = "<table border='0' cellpadding='0' cellspacing='0'><tr><td class='infoLink'><a href='javascript:zoomForward()' class='infoLink'>Weiter&nbsp;&nbsp;</a></td><td class='infoLink'><a href='javascript:zoomForward()' class='infoLink'><img src='../../img/chirurg/icon-forward.gif' width='18' height='18' border='0' alt=''></a></td></tr></table>";
		} else {
			document.all.bForward.innerHTML = "";
		}
	} else if( document.getElementById ) {
		if( currentImage > 1 ) {
			document.getElementById( "bBack" ).innerHTML = "<table border='0' cellpadding='0' cellspacing='0'><tr><td class='infoLink'><a href='javascript:zoomBack()' class='infoLink'><img src='../../img/chirurg/icon-back.gif' width='18' height='18' border='0' alt=''></a></td><td class='infoLink'><a href='javascript:zoomBack()' class='infoLink'>&nbsp;&nbsp;Zurück</a></td></tr></table>";
		} else {
			document.getElementById( "bBack" ).innerHTML = "";
		}
		if( currentImage < imageCount ) {
			document.getElementById( "bForward" ).innerHTML = "<table border='0' cellpadding='0' cellspacing='0'><tr><td class='infoLink'><a href='javascript:zoomForward()' class='infoLink'>Weiter&nbsp;&nbsp;</a></td><td class='infoLink'><a href='javascript:zoomForward()' class='infoLink'><img src='../../img/chirurg/icon-forward.gif' width='18' height='18' border='0' alt=''></a></td></tr></table>";
		} else {
			document.getElementById( "bForward" ).innerHTML = "";
		}
	}
}