APEX

hey everyone,

i really have some troubles with apex. what i want to do:
there is a pop up window where the user write a search text, click on a button and the results displays. cause the most user write the same searchtext which they see in a previous window, i want to fill the texflied with that text and click the button via code, but i have no idea how.

what i reached and tryed till now:
i transport the search text via url to the pop up window and extract the text with: window.location.href.split("SearchText:")[1]
with document.write i checked about the result and it's right, but how do i set the value from the text field with that?? And how can i submit a button after the window is loaded and the text field with the value is set? there is a "Default Value" under the Preferences of the Text Field in Apex, but javascript somehow not works, only static text.

Thank You!

Best Regards
Godric