Kartra Escape Query

/*
 * Kartra drops all but the first parameter (if any) and then adds
 * r_done=1 on the first visit to a custom domain. This function
 * encodes all the parameters into the first in a way that gets
 * properly expanded to the original parameter list.
 * Takes the original query string without the leading ?.
 */
function kartraEscapeQuery (qs) {
return '?$=' + encodeURIComponent(encodeURIComponent('&' + qs)) + '&' + qs;
}