Small stocks were generally flat Monday, mostly hanging on to the coattails of the least impressive major index -- the

Nasdaq Stock Market

-- as falling names like

BPI Energy

( BPG) helped keep things close to the ground.

Shares of the coalbed-methane driller plummeted 21.6% to 98 cents on disappointing test results from a Northern Illinois Basin pilot well. Reservoir simulation found average net pay, gas content and gas saturation all to be well below basinwide averages.

China's

JinPan International

(JST)

, which makes cast resin transformers for voltage distribution, sank 13.1% to $19.85 after reporting first-quarter income of 20 cents a share on $16.4 million revenue. The company didn't provided first-quarter results last year.

Broadcaster

Gray Television

(GTN) - Get Gray Television, Inc. Report

posted a far-wider-than-expected loss (per Thomson Financial) of $11.3 million, or 24 cents a share, and video-technology developer

Focus Enhancements

( FCSE) missed the Street's revenue estimates. Atlanta-based Gray was down 5.9% to $10.12; shares of Campbell, Calif.-based Focus dropped 5.7% to $1.33.

Elsewhere, Florida's

Bankrate

TheStreet Recommends

(RATE)

gave up 3.6% to $41.50 after a Citigroup analyst cut the bank-information Web site to hold from buy on valuation. Stanford Research likewise downgraded

Insituform Technologies

( INSU) to hold, pushing shares of the Missouri-based construction company down 4.7% to $19.

Among leaping small-caps today, however, was the heavily traded

AVI Biopharma

( AVII). The Oregon-based company inked contracts worth $7.1 million with the Department of Defense for development of drugs against potential bioterrorism agents. Shares lifted by 30 cents, or 10.8%, to $3.07.

Another health name,

Mannatech

(MTEX) - Get Mannatech, Incorporated Report

, posted per-share earnings of 26 cents vs. 22 cents last year. The Texas-based maker of nutritional supplements and other products climbed 9.4% to $15.80.

Business-software firm

Voxware

(VOXW)

, of New Jersey, surged 24.6% to $7.23 after bumping its stockholders' equity past $2.5 million, thus regaining compliance with the Nasdaq, and Ohio's

Rocky Brands

(RCKY) - Get Rocky Brands, Inc. Report

jumped 18.8% on per-share profits of 14 cents, which far exceeded two analysts' expectations.

The Russell 2000 was virtually unchanged recently, easing 20 points to 832.68, as the S&P SmallCap 600 added 30 points to 432.02.