function isNumberKey(evt,event)
{
	 var charCode = (evt.which) ? evt.which : evt.keyCode
	 if (charCode > 31 && (charCode < 48 || charCode > 57))
		return false;
	
	 return true;
}
function isNumberKeyWithDot(evt,event)
{
	 var charCode = (evt.which) ? evt.which : evt.keyCode
	 if (charCode > 31 && (charCode < 48 || charCode > 57) && charCode != 46  )
	 return false;
	 return true;
}