function checkEnter(e,form){ 
	var characterCode;		
	if(e && e.which){ 
		e = e;
		characterCode = e.which; 
	}else{
		e = event
		characterCode = e.keyCode;
	}
	
	if(characterCode == 13){ //if generated character code is equal to ascii 13 (if enter key)
		document[form].submit(); 
		return false;
	}else{
		return true;
	}
}