function Monthlyfree(){
if (document.InputForm.Name1.value.length != 0)
{

		if (document.InputForm.Name1.value.length != 0){
			Num="เสวนาฟรี";
			document.InputForm.fee.value = Num;
	}else{//4
		document.InputForm.fee.value = "เสวนาฟรี";
			}
}//end if begin
else{
	document.InputForm.fee.value = "เสวนาฟรี";
		}
}//end funcetion



function ExcuteMonth(){
if (document.InputForm.Name1.value.length != 0)
{
		if (document.InputForm.Name1.value.length != 0){
			Num = 750;
			document.InputForm.fee.value = Num;
			if (document.InputForm.Name2.value.length != 0){
				Nvalue = document.InputForm.fee.value;
				document.InputForm.fee.value = Num*2;
					if (document.InputForm.Name3.value.length != 0){
						Nvalue = document.InputForm.fee.value;
						document.InputForm.fee.value = Num*3;
								if (document.InputForm.Name4.value.length != 0){
										Nvalue = document.InputForm.fee.value;
										document.InputForm.fee.value = Num*4;
								}//1

					}//2
			}//3
	}else{//4
		document.InputForm.fee.value = "";
			}
}//end if begin
else{
	document.InputForm.fee.value = "";
		}
}//end funcetion


function Cnum(){
if (event.keyCode < 45 || event.keyCode > 57) 
	{
		alr="Only numeric to you enter.\n\n";
		alr=alr+"Try again please.";
alert(alr);
event.returnValue = false;
	}}//