Here is the 2001 proposed legislation opposed by Obama:

http://www.ilga.gov/legislation/legisnet92/summary/920SB1095.html

2002 proposed legislation opposed by Obama:

http://www.ilga.gov/legislation/legisnet92/sbgroups/sb/920SB1093LV.html

2003 proposed legislation opposed by Obama:

http://www.ilga.gov/legislation/fulltext.asp?DocName=09300SB1082&GA=93&SessionId=3&DocTypeId=SB&LegID=3910&DocNum=1082&GAID=3&Session=

Note the amended language (you can click a link on the page to see it) puts in the same langauge placed in the bill passed by the US congres to ensure that this doesn't give any human rights to an unborn fetus. Obama still opposed it. His comments for opposing the 2003 legislation are not on the record, but his reasons for opposing the 2001 and 2002 legislation regarded fears about limiting abortion.