About setting the homepage of Javascript in Firefox

In IE, we can easily use the following Code To set the Home Page:

< A Class = "Chlnk" Style = "Cursor: hand; font-weight: bold; color: #004080; font-family: verdana" Href onclick = "This. style. Behavior = 'url (# default # homepage) '; this. setHomePage ('HTTP: // www.java-scripts.net ');" > Click here to make Java-scripts.net your default homepage! </ A >

However, Firefox does not work.

To use the script to set the homepage in Firefox, you must first confirm that in "about: config" of the browser
Signed. Applets. codebase_principal_support
Set to true

Then use the following script: < Script Language = "JavaScript" >
Function SetHomePage ()
{
If (Document. All)
{< br> document. body. style. behavior = ' URL (# default # homepage) ' ;< br> document. body. setHomePage ( ' http://www.asp.net/130.aspx ' );
}
Else   If (Window. Sidebar)
{
If (Window. Netscape)
{
Try
{
Netscape. Security. privilegemanager. enableprivilege ("Universalxpconnect");
}
Catch (E)
{
Alert ("This action was aviod by your browser, If You Want To enable, please enter about: config in your address line, and change the value of signed. Applets. codebase_principal_support to true");
}
}
VaR Prefs = Components. classes [ ' @ Mozilla.org/preferences-service=1 ' ]. Getservice (components. Interfaces. nsiprefbranch );
Prefs. setcharpref ( ' Browser. startup. Homepage ' , ' Http://www.asp.net/130.aspx ' );
}
}
</ Script >

< Input Type = "Button" Value = "Set Home Page" Onclick = "SetHomePage ();"   />