diff --git a/public/javascripts/Manuscript.js b/public/javascripts/Manuscript.js
index b15efab..b7d0926 100644
--- a/public/javascripts/Manuscript.js
+++ b/public/javascripts/Manuscript.js
@@ -8,7 +8,7 @@ Manuscript.bboxToStyle = function(bbox_str) {
   arr = bbox_str.split(" ");
   left_pos = "left:"+arr[1]+"px; ";
   top_pos = "top:"+arr[2]+"px; ";
-  right_pos = "right:"+arr[3]+"px; ";
-  bottom_pos = "bottom:"+arr[4]+"px; ";
-  return left_pos + top_pos + right_pos + bottom_pos;
-};
\ No newline at end of file
+  width = "width:"+(arr[3]-arr[1])+"px; ";
+  height = "height:"+(arr[4]-arr[2])+"px; ";
+  return left_pos + top_pos + width + height;
+};
diff --git a/spec/javascripts/ManuscriptSpec.js b/spec/javascripts/ManuscriptSpec.js
index c135ead..7cf0974 100644
--- a/spec/javascripts/ManuscriptSpec.js
+++ b/spec/javascripts/ManuscriptSpec.js
@@ -3,9 +3,9 @@ describe("Manuscript", function() {
   describe ("class methods", function() {
       it("#bboxToStyle", function() {
           result = Manuscript.bboxToStyle("bbox 197 272 249 281");
-          expect(result).toEqual("left:197px; top:272px; right:249px; bottom:281px; ");
+          expect(result).toEqual("left:197px; top:272px; width:52px; height:9px; ");
 
       });
 
   });
-});
\ No newline at end of file
+});