function onlyDigits(e)
	 {
		var retKey = true;	
		if (window.event.keyCode < 46 || window.event.keyCode > 57) 
		{
			window.event.keyCode = 0;
			retKey = false;
		}
		return (retKey); 
	}
	
	
function onlyIntegers(e)
 {
	var retKey = true;	
	if (window.event.keyCode < 47 || window.event.keyCode > 57) 
	{
		window.event.keyCode = 0;
		retKey = false;
	}
	return (retKey); 
}