Generally yes. The GPL primarily restricts distribution, not use. Therefore, until you distribute your website (for example, selling all the code in a zip file for others to install it), you do not need to release the rest of your website under the GPL. In fact, even if you make changes to the component and do not redistribute the new component, you do not need to release the source code changes that you made.
I must add that GNU has a separate license to use a website called AGPL http://en.wikipedia.org/wiki/Affero_General_Public_License , which has different requirements for using the AGPL code website. If the code falls within this, I don’t know this license well enough regarding your question (besides being inconsistent).
PLUpload, .., , , flash .., ... , GPL JavaScript , , , "", , "" "(- - " HTTP " ..).
(yada yada). , .