var old_menu = '';
var old_cell = '';

function menuclick( submenu ,cellbar){
        if( old_menu != submenu ) {
            if( old_menu !='' ) {
                old_menu.style.display = 'none';
            }
                submenu.style.display = 'block';
                old_menu = submenu;
                old_cell = cellbar;
    } 
            else {
                submenu.style.display = 'none';
                old_menu = '';
                old_cell = '';
            }
    }
function view(text) {
        if(text=="") {
            content.innerText="¸Þ´º¿¡ ´ëÇÑ ¼³¸íÀ» º¸¿©ÁÖ´Â °÷ÀÔ´Ï´Ù.";
        }
        else content.innerText=text;
}

function menu(name)
{
submenu=eval("submenu"+name+".style");
        if (submenu.display=='none')
        {
                submenu.display='block';
        }
        else
        {
                submenu.display='none';
        }
}