function go_url(menu) {
        choice = menu.selectedIndex;

        if (menu.options[choice].value != "") {
        window.location.href = menu.options[choice].value;
    }
}


function open_window(url) {
        sx = 800;
        sy        = 600;

        var winl = (screen.width-sx)/2;
   var wint = (screen.height-sy)/2;

        window.open(url,'Links','scrollbars=1, resizable=0 , width='+sx+', height='+sy+' , top='+wint+',left='+winl).focus();
}

function MM_findObj(n, d) {
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

var ie=(document.all && document.all.item && !window.opera)?1:0;
var def_normal_class = 'nav2';
var def_hightlight_class = 'nav2_';

/* @todo заставить работать в Mozille */
function Show(div, evnt, elem1, class_highlight,type) {
        class_normal = def_normal_class;
        if(!class_highlight) class_highlight = def_hightlight_class;

        if (evnt) highlight(evnt, class_highlight);

        if ((obj=MM_findObj(div))!=null) {
                if(ie){
                        if(type  == 0)  { x = 154; y = 12; }
                        else                        { x = 0; y = 0; }

                        //x = 226;y=13;

                        //alert(x);

                        obj.style.left = event.clientX - event.offsetX - x;//
                        obj.style.top = event.clientY - event.offsetY + document.body.scrollTop+ y;//
                } else {
                        if (event.srcElement.tagName=='TD') {
                                obj.style.left = event.clientX - event.offsetX - 5;
                                obj.style.top = event.clientY - event.offsetY + document.body.scrollTop + 23;
                        }
                }
                ShowHide('show', obj, elem1, class_normal, class_highlight);
        }
}

function Hide(div, evnt, elem1, class_normal) {
        if(!class_normal) class_normal = def_normal_class;
        class_highlight = def_hightlight_class;

        if(evnt) highlight(evnt, class_normal);

        if ((obj=MM_findObj(div))!=null)
                ShowHide('hide', obj, elem1, class_normal, class_highlight);
}

function ShowHide(v, obj, elem1, class_normal, class_highlight) {
        if(!class_normal) class_normal = def_normal_class;
        if(!class_highlight) class_highlight = def_hightlight_class;
        //if (event.fromElement.tagName!='DIV') return;
        obj1 = MM_findObj(elem1);
        //obj2 = MM_findObj(elem2);
        if (obj1)
        if (obj1) {
                if (v=='hide') obj1.className=class_normal;
                else obj1.className=class_highlight;
        }
        if (obj.style) {
                obj=obj.style;
                v=(v=='show')?'block':(v=='hide')?'none':v;
        }
        obj.display=v;
}

function highlight(obj, class_name){
        obj.className = class_name;
}