var xMenu = Class.create();

xMenu.prototype =
{
    initialize: function(){
        this.exceptions = new Array('/common/','/faq','/podbor');
        this.parse_level();
        this.current_level = this.page_level;
        this.set_container(this.anc_name,this.current_level);
        this.uns = -1;     
      },
  
      
    parse_level: function(){
       
       var loc = document.location.toString().split('~');
       this.loc = loc[0];
       this.levels = this.loc.split('/'); 
       addr = [];
       this.levels.shift(); 
       this.levels.shift(); 
       this.levels.shift();    
       if (this.levels[this.levels.length-1]=='') this.levels.pop(); 
       if (this.levels.length<=1) {
            this.page_level = 1;
            this.anc_level  = 0;
            this.anc_name = "root";
       } 
       else {
            this.page_level = this.levels.length;
            this.anc_level  = this.page_level - 1;
            this.anc_name   = this.levels[this.anc_level-1];
       }
    },
    
    mnext: function(elt){
        var d    = elt.getAttribute('rel');
        elt.href="javascript:void(0)";
        if (this.current_level==1){this.levels=new Array(); this.levels.push(d);}
        else {this.levels.push(d);}
        var new_level  = this.current_level+1;
        var str = '[x="'+d+'"]';
        d = $('section1').getElementsBySelector(str);
        $('section'+new_level).innerHTML = d[0].innerHTML;
        
        mglider.next();
        this.current_level++;
        this.canc_name = d[0].getAttribute('x');
    },
    
    mprev: function(elt){

        if (this.current_level<3) {mglider.previous();}
        else{
            this.levels.pop();
            var lev = this.levels[this.current_level-3];
            var str = '[x="'+lev+'"]';
            var elts = $('section1').getElementsBySelector(str);
            var level = this.current_level - 1;
            $('section'+level).innerHTML = elts[0].innerHTML;            
            setTimeout("mglider.previous()",300);
        }
        this.current_level-=1;            
    },
    
    set_container: function(anc_name,anc_level){
        if (anc_level>1){
            var level = anc_level;
            var str = '[x="'+anc_name+'"]';
            elts = $('section1').getElementsBySelector(str);
            if (elts.length>0){ 
                $('section'+level).innerHTML =  elts[0].innerHTML;   
            }
            else {this.current_level=1; this.anc_level=0}
            
        }
        element = 'section'+this.current_level;
        container = $('scroller');
        Position.prepare();
        var containerOffset = Position.cumulativeOffset(container),
        elementOffset = Position.cumulativeOffset($(element));
        this.scrolling     = new Effect.SmoothScroll(container,{duration:0, x:(elementOffset[0]-containerOffset[0]), y:(elementOffset[1]-containerOffset[1])});
    }
}