       return col
 
     # give left-over space from rounding to last column to get to 100%
-    roundingLeftOver = @availableWidth - @getHeaderWidths()
+    roundingLeftOver = availableWidth - @getHeaderWidths()
+
     # but only if there is something left over (will get negative when there are too many columns for each column to stay in their min width)
     if roundingLeftOver > 0
       @headers[@headers.length - 1].displayWidth = @headers[@headers.length - 1].displayWidth + roundingLeftOver


    # get header data
    @headers = []
    for item in @overviewAttributes
      headerFound = false
      for attributeName, attribute of @attributesList

            # e.g. column: owner
            headerFound = true
            if @headerWidth[attribute.name]
              attribute.displayWidth = @headerWidth[attribute.name] * availableWidth
            else if !attribute.width
              attribute.displayWidth = @baseColWidth
            else
