Sidebar Drop With Main Content II

Sidebar Drop With Main Content SCENARIO Our website is using "Elastic" CSS layouts based on ems. Four div areas. 1) Header Div 2) Leftsidebar Div 3) MainContent Div 4) Footer Div The divs move and react normally except the Leftsidebar. It doesn't drop down with the MainContent div when there is a large amount of text or information in the webpage. I need either the proper css style, script or html adjustment to make the Leftsidebar (with it's light grey background) to move in coordination with the MainContent div section (located on rightside). ALREADY TRIED I'm currently using Adobe Dreamweaver CS4. I already tried putting 100% in the Height of the Positioning. It seemed logical but it didn't work. (see screen shots below) SCREEN SHOTS [login to view URL] [login to view URL] [login to view URL] EXAMPLE WEBPAGE [login to view URL] ----------------------------------------------------------------------------------------------------------------------- INFORMATION PROVIDED: Above, I have provided what I believe is all the information regarding this project with exception to login information to the FTP & database. Please base your bid on this but I will be happy to answer questions and exchange correspondence through this website's personal message board during the development of this work. Try to keep in mind of time zones differences if responses aren't immediate. SELECTION PROCESS: Not required but it is very helpful when the service provider explains in very short detail your approach & end results of the work in completing this project here.