AutoJump = {
	AddNumeric : function(elementID, targetElementID, length)
	{
		var element = document.getElementById(elementID);
		var targetElement = document.getElementById(targetElementID);
		
		element.onkeyup = function(e)
		{
			var keyCode;
			
			if (!e)
				var e = window.event;

			if (e.keyCode) 
				keyCode = e.keyCode;
			else if (e.which) 
				keyCode = e.which;
				
			if (element.value.length == length && AutoJump.IsNumericKey(keyCode))
				targetElement.focus();
		}
	},
	
	IsNumericKey : function(keyCode)
	{
		if ((keyCode >= 48 && keyCode <= 57) ||
			(keyCode >= 96 && keyCode <= 105))
		{
			return true;
		}
		return false;
	}
}