$(".tool-fields.in div.collapse, .common-fields div.collapse").each(...)

function HideShow() {
    $(".tool-fields.in div.collapse, .common-fields div.collapse").each(function () {


    if (IsDataYesNoHide(this)) {

        $(this).collapse("show");

    }
    else
        $(this).collapse("hide");
    });

    alert("test");
}

function IsDataYesNoHide(element) {
    var $element = $(element);
    var datayesnohide = $element.attr("data-yes-no-hide");
    if (datayesnohide !== undefined) {
        var array = datayesnohide.split(";");
        var returnAnswer = true;

        for (var i in array) {
            var answer = array[i].split("=")[1];

            returnAnswer = returnAnswer && (answer.toLowerCase() === "true");

        }
        return returnAnswer;
    }
    else {
        return false;
    }

data-yes-no-hide="pKanban_Val=true;pTwoBoxSystem_Val=true;"