function open_code_window() {
    var code_window = document.getElementById("code_window");
    var code = document.getElementById("code");
    
    if (code_window) {
       if (code_window.style.display == "none") {
            code_window.style.left = "250px";
            code_window.style.display = "block";                   
            if (code)
                code.focus();
       }
    }
}

function close_code_window() {
    var code_window = document.getElementById("code_window");
    var code = document.getElementById("code");
    
    if (code_window) {
        code_window.style.display="none";
        if (code)
            code.value = "";
    }
}