//Client Side Validation File
var isNS4 = (navigator.appName=="Netscape")?1:0;

function OnlyNum()
{
	if (!isNS4)
	{
		if (event.keyCode < 45 || event.keyCode > 57)
			event.returnValue = false;
	}
	else
	{
		if (event.which < 45 || event.which > 57)
			return false;
	}
}