diff --git a/VQI_GenomeBrowser.js b/VQI_GenomeBrowser.js
index d3dcfbf..2452ba7 100755
--- a/VQI_GenomeBrowser.js
+++ b/VQI_GenomeBrowser.js
@@ -403,10 +403,16 @@ function VQI_GenomeBrowser(id, serviceURL) {
 
         zoom.translate([panLimit(), 0]);
 
-        svg.selectAll("g.scalable").attr("transform", "translate(" + zoom.translate()[0] + ",0)scale(" + zoom.scale() + ",1)");
+        //svg.selectAll("g.scalable").attr("transform", "translate(" + zoom.translate()[0] + ",0)scale(" + zoom.scale() + ",1)");
 
         //slow, scales elements individually, draws at large zooms
-        //svg.selectAll("g.scalable").selectAll("*").attr("transform", "translate(" + zoom.translate()[0]+",0)scale(" + zoom.scale() + ",1)");
+        svg.selectAll("g.scalable").selectAll("rect")
+                        .attr("width", function (d) {
+                    return xScale(d[indexArray.end]) - xScale(d[indexArray.start])
+                })
+                .attr("x", function (d) {
+                    return xScale(d[indexArray.start])
+                });
 
 
         xAxisSelection.call(xAxis);
@@ -839,16 +845,19 @@ function VQI_GenomeBrowser(id, serviceURL) {
                     return type == "cpg" ? 40 : type == "shore" ? 20 : 15
                 })
                 .attr("width", function (d) {
-                    return fullXScale(d[indexArray.end]) - fullXScale(d[indexArray.start])
+                    return xScale(d[indexArray.end]) - xScale(d[indexArray.start])
                 })
                 .attr("x", function (d) {
-                    return fullXScale(d[indexArray.start])
+                    return xScale(d[indexArray.start])
                 })
                 .attr("y", function (d) {
                     var type = d[indexArray.type];
                     var offset = type == "cpg" ? -20 : type == "shore" ? -10 : -7.5;
                     return offset;//height / 2 + margin + offset
                 })
+                .on("mouseenter", function(){console.log("mouseenter")})
+                .on("mouseleave", function(){console.log("mouseleave")})
+
 
                 addTooltip(trackScalableGroup.selectAll("rect")
                     .filter(function (d) {
@@ -950,12 +959,12 @@ function VQI_GenomeBrowser(id, serviceURL) {
                         return d;
                     })
                     .attr("x", function (d) {
-                        return fullXScale(d[0]);
+                        return fullXScale(d[indexArray.start]);
                     })
                     .attr("y", -10)
                     .attr("height", 20)
                     .attr("width", function (d) {
-                        return fullXScale(d[1]) - fullXScale(d[0]);
+                        return fullXScale(d[indexArray.end]) - fullXScale(d[indexArray.start]);
                     })
                     .style("fill-opacity", ".8")
                     .style("stroke", "black")
@@ -1003,15 +1012,10 @@ function VQI_GenomeBrowser(id, serviceURL) {
                     content: {
                         text: function(event, api) {
                             var min,max;
-                            if(type === "exon"){
-                                min = d[0];
-                                max = d[1];
-                            }
-                            else
-                            {
+
                                 min = d[indexArray.start];
                                 max = d[indexArray.end];
-                            }
+                            
                             $.ajax({
                                 url: serviceURL,
                                 type: 'POST',
diff --git a/dynamic_loading.php b/dynamic_loading.php
index 46fe311..9259508 100644
--- a/dynamic_loading.php
+++ b/dynamic_loading.php
@@ -152,21 +152,21 @@
         $resArray = [];
         $mergedExon = $exons[0];
         for ($i=1; $i < count($exons); $i++) { 
-            if ($exons[$i][0] - $mergedExon[1] > 1/$scale){
+            if ($exons[$i][1] - $mergedExon[2] > 1/$scale){
                 array_push($resArray, $mergedExon);
-                $mergedExon[0] = $exons[$i][0];
                 $mergedExon[1] = $exons[$i][1];
+                $mergedExon[2] = $exons[$i][2];
             }
             else{
-                if ($exons[$i][1] > $mergedExon[1]){
-                    $mergedExon[1] = $exons[$i][1];
+                if ($exons[$i][2] > $mergedExon[2]){
+                    $mergedExon[2] = $exons[$i][2];
 
                 }
             }
         }
         $LastElement = end($resArray);
         reset($resArray);
-        if ($mergedExon[1] != $LastElement[1] || count($resArray) == 0){
+        if ($mergedExon[2] != $LastElement[2] || count($resArray) == 0){
             array_push($resArray, $mergedExon); 
 
         }
@@ -179,35 +179,35 @@
 
         if ($geneEnd-$geneStart < 1/$scale){
 
-            return [[$ExStartArray[0],max($ExEndArray)]];
+            return [["", $ExStartArray[0],max($ExEndArray)]];
         }
         else{
             $resArray = [];
             if(count($ExStartArray) > 1){
-                $mergedExon = [$ExStartArray[0],$ExEndArray[0]];
+                $mergedExon = ["", $ExStartArray[0],$ExEndArray[0]];
                 for ($i=1; $i < count($ExStartArray); $i++) { 
                     if ($ExStartArray[$i] - $ExEndArray[$i-1] > 1/$scale){
                         array_push($resArray, $mergedExon);
-                        $mergedExon[0] = $ExStartArray[$i];
-                        $mergedExon[1] = $ExEndArray[$i];
+                        $mergedExon[1] = $ExStartArray[$i];
+                        $mergedExon[2] = $ExEndArray[$i];
                     }
                     else{
                         if ($ExEndArray[$i] > $ExEndArray[$i-1]){
-                            $mergedExon[1] = $ExEndArray[$i];
+                            $mergedExon[2] = $ExEndArray[$i];
 
                         }
                     }
                 }
                 $LastElement = end($resArray);
                 reset($resArray);
-                if ($mergedExon[1] != $LastElement[1]){
+                if ($mergedExon[2] != $LastElement[2]){
                     array_push($resArray, $mergedExon); 
 
                 }
 
             }
             else{
-                array_push($resArray, [$ExStartArray[0],$ExEndArray[0]]);
+                array_push($resArray, ["", $ExStartArray[0],$ExEndArray[0]]);
                 
             }
             return $resArray;