function onlyNumber(){             //¼ýÀÚ¸¸À» ±âÀÔ¹Þ°Ô ÇÏ´Â Function	
		if((event.keyCode<48)||(event.keyCode>57))
		   event.returnValue = false ;
	}

	function pressEnter( functionValue ) {
		if(event.keyCode == 10 || event.keyCode == 13) {
			eval(functionValue);
		}
	}