(function() {

// build sysparm_query

var queryParam = 'u_case_main='+current.sys_id; //case

queryParam = queryParam.replace(/&/g,'%26'); // escape all & so it will not cause any issue in parsing

var newEmailUrl = './u_directorship_approval.do?sys_id=-1&sysparm_query='+queryParam;

action.setRedirectURL(newEmailUrl);

})();