If your browser is IE5.5 , you can use the IFRAME with the Name property in the dialog, which can be developed when submitting the Name of the IFRAME. For IE4 , you can use Frames with a height of 0: examples,
TEST6.HTM ============================== Script> WINDOW.SHOWMODALDIALOG ("TEST7.HTM") script>
TEST7.HTM =================================Location.search) Alert (Window.Location.Search)