Insert Script on Google SpreadSheet programmatically

[Luiz Guilherme DAbruzzo Pereira]

I would like to know if it is possible to insert a 
Script<http://code.google.com/googleapps/appsscript/> in 
a GDocs SpreadSheet using the Google SpreadSheet 
API<http://code.google.com/apis/spreadsheets/>. 
I want to insert my script in a list of SpreadSheets but don't want to do it 
manually.