--- zogiLib/js/Attic/dl_lib.js	2004/06/03 18:13:29	1.5
+++ zogiLib/js/Attic/dl_lib.js	2004/06/25 16:59:45	1.9
@@ -190,17 +190,16 @@ var elemScaler = null;
 var picElem = null;
 
 function dl_init() {
-    elemScaler = getElement("scaler");
-    if (! elemScaler) {
-	return false;
-    }
+    elemScaler = getElement("scaler", true);
     picElem = getElement("pic", true);
-    if (picElem == null) {
+    if (picElem == null && elemScaler) {
 	// in N4 pic is in the scaler layer
 	picElem = elemScaler.document.images[0];
     }
-    // give a name to the window containing digilib
-    top.window.name = "digilib";
+    if ((!elemScaler)||(!picElem)) {
+	alert("Sorry, zogilib doesn't work here!");
+	return false;
+    }
     // put the query parameters (sans "?") in the parameters array
     parseParameters(location.search.slice(1));
     // treat special parameters
@@ -296,39 +295,6 @@ function setMark() {
     registerMouseDown(elemScaler, markEvent);
 }
 
-var ZOOMFACTOR = Math.sqrt(2);
-
-function zoomPoint(inout) {
-    // zoom image in or out around the clicked point
-    var zoom = ZOOMFACTOR;
-    if (inout < 0) {
-	zoom = 1/ZOOMFACTOR;
-    }
-    window.focus();
-
-    function zoomPointEvent(evt) {
-	// take new center and set zoom parameters
-	unregisterMouseDown(elemScaler, zoomPointEvent);
-	var p = dlTrafo.invtransform(evtPosition(evt));
-	var neww = Math.min(dlArea.width * (1/zoom), 1.0);
-	var newh = Math.min(dlArea.height * (1/zoom), 1.0);
-	var newx = p.x - 0.5 * neww;
-	var newy = p.y - 0.5 * newh;
-	var zoomarea = new Rectangle(newx, newy, neww, newh);
-	// check bounds
-	zoomarea = dlMaxArea.fit(zoomarea);
-	// set parameters
-	setParamFromArea(zoomarea);
-	parseArea();
-	// zoomed is always fit
-	setParameter("ws", 1);
-	display();
-    }
-
-    // starting event capture
-    registerMouseDown(elemScaler, zoomPointEvent);
-}
-
 
 function zoomArea() {
     var click = 1;
@@ -372,6 +338,8 @@ function zoomArea() {
 	    unregisterMouseMove(eck4, zoomMove);
 	    unregisterMouseDown(elemScaler, zoomClick);
 	    unregisterMouseDown(eck4, zoomClick);
+	    unregisterMouseUp(elemScaler, zoomClick);
+	    unregisterMouseUp(eck4, zoomClick);
 	    var p1 = dlTrafo.invtransform(pt1);
 	    var p2 = dlTrafo.invtransform(pt2);
 	    var ww = p2.x-p1.x;
@@ -406,6 +374,8 @@ function zoomArea() {
     // starting event capture
     registerMouseDown(elemScaler, zoomClick);
     registerMouseDown(eck4, zoomClick);
+    registerMouseUp(elemScaler, zoomClick);
+    registerMouseUp(eck4, zoomClick);
 }