diff --git a/expert.html b/expert.html
index f11f9f6..3291c7e 100644
--- a/expert.html
+++ b/expert.html
@@ -86,7 +86,7 @@ $().ready(function(){
   <input type="checkbox" name="2" id="updateShow2" onchange="updateShow(this.name,this.checked)" />(protection)
   </form>
   <form action="javascript:hiliteNodeList();">
-  <input type="button" value="Highlight:" onclick="hiliteNodeList();" />
+  <input type="button" value="Find:" onclick="hiliteNodeList();" />
   <input type="text" id="HighlightThese" name="HighlightThese" value="" />
   <input type="button" value="Clear Highlighting" onclick="clearHighlight();" />
   <span class="animatebox">
diff --git a/expertWires.js b/expertWires.js
index fbb014a..c80aabe 100644
--- a/expertWires.js
+++ b/expertWires.js
@@ -299,6 +299,7 @@ function recenter(){
 var highlightThese;
 
 // flash some set of nodes according to user input
+// also zoom to fit those nodes (not presently optional)
 function hiliteNodeList(){
 	var tmplist = document.getElementById('HighlightThese').value.split(/[\s,]+/);
 	if(tmplist.length==0){
@@ -307,14 +308,26 @@ function hiliteNodeList(){
 		return;
 	}
 	highlightThese = [];
+	var seglist=[];
 	for(var i=0;i<tmplist.length;i++){
 		// get a node number from a signal name or a node number
 		var name = tmplist[i];
 		var value = parseInt(tmplist[i]);
-		if((value!=NaN) && (typeof nodes[name] != "undefined")) {
+		if((value!=NaN) && (typeof nodes[value] != "undefined")) {
 			highlightThese.push(value);
+			for(var s in nodes[value].segs)
+				seglist.push(nodes[value].segs[s]);
 		} else if(typeof nodenames[name] != "undefined") {
 			highlightThese.push(nodenames[name]);
+			for(var s in nodes[nodenames[name]].segs)
+				seglist.push(nodes[nodenames[name]].segs[s]);
+		} else if(typeof transistors[name] != "undefined") {
+			// normally we push numbers: a non-number is a transistor name
+			highlightThese.push(name);
+			seglist.push([
+				transistors[name].bb[0],transistors[name].bb[2],
+				transistors[name].bb[1],transistors[name].bb[3]
+			]);
 		}
 		// invalid input: how to tell the user?
 	}
@@ -322,6 +335,17 @@ function hiliteNodeList(){
 		// all input rejected: how to tell the user?
 		return;
 	}
+	var xmin=seglist[0][0], xmax=seglist[0][0];
+	var ymin=seglist[0][1], ymax=seglist[0][1];
+	for(var s in seglist){
+		for(var i=0;i<seglist[s].length;i+=2){
+			if(seglist[s][i]<xmin) xmin=seglist[s][i];
+			if(seglist[s][i]>xmax) xmax=seglist[s][i];
+			if(seglist[s][i+1]<ymin) ymin=seglist[s][i+1];
+			if(seglist[s][i+1]>ymax) ymax=seglist[s][i+1];
+		}
+	}
+	zoomToBox(xmin,xmax,ymin,ymax);
 	clearHighlight();  // nullify the simulation overlay (orange/purple)
 	hiliteNode(-1);    // unhighlight all nodes
 	setTimeout("hiliteNode(highlightThese);", 400);
diff --git a/wires.js b/wires.js
index f527570..bb9f963 100644
--- a/wires.js
+++ b/wires.js
@@ -150,26 +150,33 @@ function overlayNode(w){
 	}
 }
 
+// originally to highlight using a list of node numbers
+//   but can now include transistor names
 function hiliteNode(n){
 	var ctx = hilite.getContext('2d');
 	ctx.clearRect(0,0,grCanvasSize,grCanvasSize);
-	ctx.fillStyle = 'rgba(255,255,255,0.7)';
 	if(n==-1) return;
-	if(isNodeHigh(n[0]))
-		ctx.fillStyle = 'rgba(255,0,0,0.7)';
 
 	for(var i in n){
+		if(typeof n[i] != "number") {
+			hiliteTrans([n[i]]);
+			continue;
+		}
+		if(isNodeHigh(n[i])) {
+			ctx.fillStyle = 'rgba(255,0,0,0.7)';
+		} else {
+			ctx.fillStyle = 'rgba(255,255,255,0.7)';
+		}
 		var segs = nodes[n[i]].segs;
 		for(var s in segs){drawSeg(ctx, segs[s]); ctx.fill();}
 	}
 }
 
+// highlight a single transistor (additively - does not clear highlighting)
 function hiliteTrans(n){
 	var ctx = hilite.getContext('2d');
-	ctx.clearRect(0,0,grCanvasSize,grCanvasSize);
-	ctx.strokeStyle = 'rgba(255,255,255,1.0)';
+	ctx.strokeStyle = 'rgba(255,255,255,0.7)';
 	ctx.lineWidth = 4
-	if(n==-1) return;
 	for(var t in n){
 		var bb = transistors[n[t]].bb
 		var segs = [[bb[0], bb[2], bb[1], bb[2], bb[1], bb[3], bb[0], bb[3]]] 
@@ -177,6 +184,16 @@ function hiliteTrans(n){
 	}
 }
 
+// takes a bounding box in chip coords and centres the display over it
+function zoomToBox(xmin,xmax,ymin,ymax){
+	var xmid=(xmin+xmax)/2;
+	var ymid=(ymin+ymax)/2;
+	var x=xmid/grChipSize*600;
+	var y=600-ymid/grChipSize*600;
+	var zoom=5;  // pending a more careful calculation
+	moveHere([x,y,zoom]);
+}
+
 function drawSeg(ctx, seg){
 	var dx = 400;
 	ctx.beginPath();