XUL calling problem in firefox

[Shobhit jain]

Hi everyone ,here is the code which worked while i opened it with html file in firefox,but when that javascript function is called by XUL button ,it doesnt work,please help..and suggest for the possible alternatesunction getActiveText(e) {


var text = (document.all) ? document.selection.createRange().text : document.getSelection();

return true;
}
document.onmouseup = getActiveText;

if (!document.all)document.captureEvents(Event.MOUSEUP);


function redirectPage()
{
function redirectPage()
{
window.location = "http://www.domain.com/map.pl?q=" +document.getSelection();
}

please help me to call this function with XUL toolbar button.
Thanks:)