Bug 158935 [2.2.0][Smoke]PDF can not preview anything by IE
Details: [2.2.0][Smoke]PDF can not preview anything by IE Step: 1.New a report and add a label 2.Preview as PDF Actual resutl: Can not preview anything Excepted resutl: Preview the label by PDF
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/servlet/ViewerServlet.java
* <td><b>Parameter</b></td>
 * <td><b>Description</b></td>
 * <td><b>Values</b></td>
 * <td><b>Default</b></td>
 * </tr>
 * <tr>
 * <td>__report</td>
 * <td>The path to the report document</td>
 * <td>&nbsp;</td>
 * <td>required</td>
 * </tr>
 * <tr>
 * <td>__format</td>
 * <td>The output format</td>
 * <td>html or pdf</td>
 * <td>optional, default to html</td>
 * </tr>
 * <tr>
 * <td>__locale</td>
 * <td>Report locale</td>
 * <td>Java locale value such as en or ch-zh.</td>
 * <td>optional, default to JVM locale</td>
 * </tr>
 * <tr>
 * <td>__page</td>
 * <td>Report page number</td>
 * <td>Report page to be viewed.</td>
 * <td>optional, default to 0</td>
 * </tr>
 * <tr>