PRO_showModelessDialog(sURL [, vArguments] [, sFeatures])
Parameters
sURL: Required. String that specifies the URL of the document to load and display.
local file path supported with format ie7pro://scriptpath/foo.html.
vArguments: Optional. Variant that specifies the arguments to use when displaying
the document. Use this parameter to pass a value of any type, including an
array of values. The dialog box can extract the values passed by the caller
from the dialogArguments property of the window object.
sFeatures: Optional. String that specifies the window ornaments for the dialog box,
using one or more of the following semicolon-delimited values:
dialogHeight:sHeight Sets the height of the dialog window
(see Remarks for default unit of measure).
dialogLeft:sXPos Sets the left position of the dialog window relative
to the upper-left corner of the desktop.
dialogTop:sYPos Sets the top position of the dialog window relative
to the upper-left corner of the desktop.
dialogWidth:sWidth Sets the width of the dialog window
Return Value: empty