Crocs (CROX) - Get Report is heading for a new high, Jim Cramer said Monday on CNBC's Stop Trading! segment.

Cramer said the Niwot, Colo., maker of plastic shoes is poised to become a painful mistake for the short-sellers who have flooded into the shares. Cramer said that with the company due to make a presentation at a Thomas Weisel conference, there's buzz that the quarter is going well. That's going to feed an even bigger rally in the shares, up 6% at midafternoon Monday, Cramer said.

"Everyone hates this story," Cramer said, noting that the company is expanding its core funny-looking footwear segment into college licensing and other lucrative channels. "When you wear 'em, your kids make fun of you," he added. Still, he believes Crocs shares -- up $1.72 to $31.91 -- will soon take out their 52-week high at $37.

Cramer doesn't believe shares in alternative energy companies are heading for new highs. Cramer said he would sell these names, which range from

Sunpower

( SNPR) and

Ballard Power

(BLDP) - Get Report

to

FuelCell

(FCEL) - Get Report

and

The Andersons

(ANDE) - Get Report

, because the falling price of crude oil makes alternative energy uneconomical in the U.S.

"Maybe they work in Germany," Cramer said of investments in companies that make alternative fuel sources ranging from ethanol and hydrogen to fuel cells. But, he added, paraphrasing President John F. Kennedy's famous declaration in Berlin, "Ich bin ein New Yorker."

At the time of publication, Cramer had no positions in stocks mentioned.

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