code: function(){
  		var cell = this.getcell();
  		if(cell.isnull || cell===this.mouseCell){ return;}
  
  		if(this.inputMode==='clear'){
  			cell.remove51cell();
  			this.inputData = 0;
  		}
  		else if(this.inputMode==='cell51' && !cell.is51cell()){
  			cell.set51cell();
  			this.inputData = 51;
  		}
  
  		cell.drawaround();
  
  		this.mouseCell = cell;
  	}
docs: --------------------------------------------------------------------------- mv.input51_fixed()      inputMode固定時に[＼]を作ったり消したりする ---------------------------------------------------------------------------