code: public double getDoubleAttribute(String name) throws SlickXMLException {
  		try {
  			return Double.parseDouble(getAttribute(name));
  		} catch (NumberFormatException e) {
  			throw new SlickXMLException("Value read: '"+getAttribute(name)+"' is not a double",e);
  		}
  	}
docs: Get the value specified for a given attribute on this element as an double.
  
  @param name The name of the attribute whose value should be retrieved
  @return The value given for the attribute
  @throws SlickXMLException Indicates a failure to convert the value into an double