function wipeOutRange(prefix,from,to){
				for (var i=from; i<=to; i++)
					wipeOut(prefix+i+''); 
			}
			function wipeOutRangeExcept(prefix,from,to,except){
				for (var i=from; i<=to; i++)
					if (i==except)
						wipeIn(prefix+i+'');
					else
						wipeOut(prefix+i+''); 
			}
						function wipeInRange(prefix,from,to){
							for (var i=from; i<=to; i++)
								wipeIn(prefix+i+'');
						}