createHiddenElement = function(name, value) {
				var newElement = document.createElement("input");
				newElement.name=name;
				newElement.type="hidden";
				newElement.value = value;
				return newElement
			}
Opens a download window for downloading the given content.
@methodOf ORYX.Plugins.AbstractPlugin.prototype
@param {String} filename The content's file name
@param {String} content The content to download