function parseUriParameter(sParameter) {
				var sParameterValue = oUrlSearchParams.get(sParameter),
					aValues = sParameterValue ? sParameterValue.split("~") : [];

				return {
					content : aValues[0] || null,
					editable : aValues[1] !== "readonly",
					enabled : aValues[1] !== "disabled"
				};
			}
Parses the value of the given URL parameter which describes the value and the
readonly resp. disabled state for the unit or value field.
Sample: "EUR~readonly" leads to a readonly currency field with content "EUR".

@param {string} sParameter The parameter name
@returns {object}
  An object with the boolean properties editable and enabled denoting the
  corresponding properties of the input field and a content property with the input
  field's initial value.