function keyPress(ob) {
	if (ob.value != "" && ob.value != null) {
		if (!ob.value.match(/^[1-9]\d*$/))
			ob.value = ob.t_value;
		else
			ob.t_value = ob.value;
		if (ob.value.match(/^[1-9]\d*$/))
			ob.o_value = ob.value;
	}
}
function keyUp(ob) {
	if (ob.value != "" && ob.value != null) {
		if (!ob.value.match(/^[1-9]\d*$/))
			ob.value = ob.t_value;
		else
			ob.t_value = ob.value;
		if (ob.value.match(/^[1-9]\d*$/))
			ob.o_value = ob.value;

	}
}
function onBlur(ob) {
	if (ob.value != "" && ob.value != null) {
		if (!ob.value.match(/^[1-9]\d*$/))
			ob.value = ob.o_value;
		else {
			if (ob.value.match(/^\.\d+$/))
				ob.value = 0 + ob.value;
			if (ob.value.match(/^\.$/))
				ob.value = 0;
			ob.o_value = ob.value
		}
	}

}

function onlyNum() {
	if (!(event.keyCode == 46) && !(event.keyCode == 8)
			&& !(event.keyCode == 37) && !(event.keyCode == 39))
		if (!((event.keyCode >= 48 && event.keyCode <= 57) || (event.keyCode >= 96 && event.keyCode <= 105)))
			event.returnValue = false;
}