From Microsoft Internet Explorer, you can open and work on your Visio document the same way as you would an HTML or Microsoft Office program file. When you open a document from within Internet Explorer, the Visio program provides the same tools that are available when you work with it as a stand-alone program.
To Open a Microsoft Visio drawing from within Microsoft Internet Explorer:
Click Open on the File menu. Figure 3.10 shows the Open dialog, and the Browse button.
Click All Files to display Microsoft Visio files ...