Also climbing on acquisition-related news was Inter-Tel ( INTL), purveyor of converged voice-and-data communications systems, after private-equity firm Vector Capital offered to buy it for $26.50 a share in cash. The Tempe, Ariz., company's shares were up $1.34, or 5.2%, to $26.90. Tecumseh Products ( TECUA), a Michigan-based maker of compressors and other products, jumped 12.6% to $12.08 after predicting a second-quarter year-over-year improvement in operating results, despite simultaneously reporting a widened first-quarter loss. In analyst calls, Citigroup upped Georgia's Neenah Paper ( NP) to buy from hold, after which shares lifted by 4.6% to $42.72, and Stifel Nicolaus began coverage of semiconductor Microsemi ( MSCC) with a buy rating. Shares of the Irvine, Calif., company added 3.4% to $22. The Russell 2000 and the S&P SmallCap 600, both of which track most of the above winners, were each in the green recently. The former added 0.4% to 817.14; the latter was up 0.3% to 425.56.