//=======================================================================
// over_picture.js
// 
// Universal version.
//
// Copyright (c) Ing. Miloslav Ponkrác 1999.
// ponnyoffice@atlas.cz
// All rights reserved. 
//=======================================================================


var op_temp_variable = null;
var op_capability = false;
var op_after_init = false;

/*
function op_init()
{
    var browser_name = navigator.appName;
    var browser_version = parseInt(navigator.appVersion);

    op_capability = 
        (browser_name.indexOf("Netscape")>=0 && browser_version>=3)
        ||
        (browser_name.indexOf("Internet Explorer")>=0 && browser_version>=4);
    op_after_init = true;
}
*/

function op_register (id_name, normal_src, over_src)
{
//    if (!op_after_init)
//        op_init(); 

//    if (op_capability)
//    {
        if (over_src == null)   over_src = normal_src;
//      if (down_src == null)   down_src = over_src;

        op_temp_variable = new Array 
        (id_name, new Image(), new Image());
        op_temp_variable[1].src = normal_src;
        op_temp_variable[2].src = over_src;
 //      op_temp_variable[3].src = down_src;
        eval ("op_item_" + id_name + " = op_temp_variable");
        return op_temp_variable;
 //   }

    return null;
}


function op_set_normal (id_name)
{
//    if (op_capability)
//    {
        var reg_item = eval ("op_item_" + id_name);
        document['menu_desc'].src = reg_item[1].src;
//    }
//    return op_capability;
};

    
function op_set_over (id_name)
{
//    if (op_capability)
//    {
        var reg_item = eval ("op_item_" + id_name);
        document['menu_desc'].src = reg_item[2].src;
		
//    }
//    return op_capability;
};

op_register ("tvorba", "img/menu.gif", "img/tvorba.gif");
op_register ("hudba", "img/menu.gif", "img/hudba.gif");
op_register ("www", "img/menu.gif", "img/www.gif");
op_register ("publikace", "img/menu.gif", "img/publikace.gif");