var map;
function change_class_rollover(obj) {
    obj.className = 'gallery-img-rollover';
}
function change_class(obj) {
    obj.className = 'gallery-img';
}

function disableitem(listname, status) {
    var frmname = 'aspnetForm';
    for (i = 0; i < document.forms[frmname].elements.length; i++) {
        if (document.forms[frmname].elements[i].type == "checkbox") {
            if (document.forms[frmname].elements[i].name.indexOf(listname) > -1) {
                document.forms[frmname].elements[i].disabled = status;
                if (status == 'disabled') {
                    document.forms[frmname].elements[i].checked = true;
                } else {
                    document.forms[frmname].elements[i].checked = false;
                }
            }
        }
    }
}
function radioclick(chkAllCheckbox, listname) {
    var frmname = 'aspnetForm';
    var frm = document.forms[frmname];
    for (i = 0; i < frm.elements.length; i++) {
        if (frm.elements[i].type == "checkbox") {
            if (frm.elements[i].name.indexOf(chkAllCheckbox) > -1) {
                if (frm.elements[i].checked) {
                    disableitem(listname, 'disabled');
                } else {
                    disableitem(listname, '');
                }
            }
        }
    }
}

function radioClickAll(chkAllCheckbox, listname) {
    var frmname = 'aspnetForm';
    var frm = document.forms[frmname];
    for (i = 0; i < frm.elements.length; i++) {
        if (frm.elements[i].type == "checkbox") {
            if (frm.elements[i].name.indexOf(chkAllCheckbox) > -1) {
                if (frm.elements[i].checked) {
                    disableitem(listname, 'disabled');
                }
            }
        }
    }
}