public void beginNewTable(final int borderWidth) {
    toolTip.append(
        "</table><table border=\"" + borderWidth + "\" cellpadding=\"1\" cellspacing=\"0f\">");
  }
Adds a cell to the current row in the tooltip table.

<p>Note: Please make sure to escape the string before adding it. Otherwise the HTML code might
get screwed up.

@param cellContent
java/zylib/src/main/java/com/google/security/zynamics/zylib/gui/tooltips/ToolTipBuilder.java