function external_url() {
    if (!document.getElementsByTagName) return;
    var links = document.getElementsByTagName("a");
    for (var i=0; i<links.length; i++) {
        var thisLink = links[i];
        if (thisLink .getAttribute("href") && thisLink .getAttribute("class") == "external-link")
            thisLink .target = "_blank";
    }
    if(document.getElementById('selector')) {
        document.getElementById('selector').style.display='';
    }
}

function bookmark(url, title) {
    var ver = navigator.appName
    var num = parseInt(navigator.appVersion)
    if ((ver == "Microsoft Internet Explorer")&&(num >= 4)) {
        window.external.AddFavorite(url,title);
    }
}

function change_visibility(checkbox,input) {

    if (document.getElementById(checkbox).checked == true) {
        document.getElementById(input).style.display = 'inline';
    } else {
        document.getElementById(input).style.display = 'none';
        document.getElementById(input).value = '';
    }
}

function new_date(row,status) {

    var ver = navigator.appName

    if(status == 'show') {
        
        if ((ver == "Microsoft Internet Explorer")) {
            document.getElementById(row).style.display = 'block';
        } else {
            document.getElementById(row).style.display = 'table-row';       
        }
        document.getElementById('submit_top').style.display = 'block';
        document.getElementById('submit_bottom').style.display = 'block';
        
    } else {
        document.getElementById(row).style.display = 'none';
        document.getElementById('submit_top').style.display = 'none';
        document.getElementById('submit_bottom').style.display = 'none';
    }
}