//---------------------------------------------------------
//  Nom Document : gf_scroll_div.js
//  Auteur       : G.Ferraz
//  Objet        : menu flottant
//  Creation     : 01.01.2007
//---------------------------------------------------------
//  Mise à Jour  : 01.11.2007
//---------------------------------------------------------
// OUTILS /////////////////////////////
//---------------------------------------------
function Add_Event( obj_, event_, func_, mode_){
  if( obj_.addEventListener)
    obj_.addEventListener( event_, func_, mode_? mode_:false);
  else
    obj_.attachEvent( 'on'+event_, func_);
}
//----------------------
function GetScrollPage(){
  var Left;
  var Top;
  var DocRef;

  if( window.innerWidth){
    with( window){
      //Left   = pageXOffset;
      Top    = pageYOffset;
    }
  }
  else{ // Cas Explorer a part
    if( document.documentElement && document.documentElement.clientWidth)
      DocRef = document.documentElement;
    else
      DocRef = document.body;

    with( DocRef){
      //Left   = scrollLeft;
      Top    = scrollTop;
    }
  }
  return({top:Top});//, left:Left});
}
//---------------------------
function ObjGetPosition(obj_){
  var PosX = 0;
  var PosY = 0;
  //-- suivant type en parametre
  if( typeof(obj_)=='object')
    var Obj  = obj_;
  else
    var Obj  = document.getElementById( obj_);
  //-- Si l'objet existe
  if( Obj){
    //-- Recup. Position Objet
    PosX = Obj.offsetLeft;
    PosY = Obj.offsetTop;
    //-- Si propriete existe
    if( Obj.offsetParent){
      //-- Tant qu'un parent existe
      while( Obj = Obj.offsetParent){
        if( Obj.offsetParent){ // on ne prend pas le BODY
          //-- Ajout position Parent
          PosX += Obj.offsetLeft;
          PosY += Obj.offsetTop;
        }
      }
    }
  }
  //-- Retour des positions
  return({left:PosX, top:PosY});
}
//-------------------------------------
// MENU FLOTTANT //////////////////////
//-------------------------------------
var IdTimer_1;
var IdTimer_2;
var O_DivScroll;
var Rapport = 1.0/20.0;  // On divise par 20
var Mini = 2* Rapport;
//-----------------------
//-----------------------
function getDocumentHeight()
{
if (document.body.height)
return document.body.height;
return document.documentElement.offsetHeight;
}
//---------------------------
//---------------------------
var IsFocus = "n";
//var maxY = getDocumentHeight();
//-----------------------
//-----------------------
function DIV_Scroll( id_){
  var Obj = document.getElementById( id_);
  this.Obj = Obj;
  if( Obj){
    Obj.style.position = "absolute"; // IMPERATIF
    //-- Recup position de depart
    var Pos   = ObjGetPosition( id_);
    this.PosX = Pos.left;
    this.PosY = Pos.top;
    this.DebX = this.PosX;
    this.DebY = this.PosY;
    this.NewX = 0;
    this.NewY = 0;
    this.Move = DIV_Deplace;
  }
}
//---------------------------
function DIV_Deplace( x_, y_){
//---------------------------
//---------------------------
  if(y_ >= maxY - 842){
	y_ -= (y_ - maxY) + 842;
  }
  var a = 0;
  if(y_ > 300){a++;
	  if(y_ > 310){a++;
		  if(y_ > 320){a++;
			  if(y_ > 330){a++;
				  if(y_ > 340){a++;
					  if(y_ > 350){a++;
						  if(y_ > 360){a++;
							  if(y_ > 370){a++;
								  if(y_ > 380){a++;
									  if(y_ > 390){a++;
										  if(y_ > 400){a++;
											  if(y_ > 410){a++;
												  if(y_ > 420){a++;
													  if(y_ > 430){a++;
														  if(y_ > 440){a++;
															  if(y_ > 450){a++;
															  }
														  }
													  }
												  }
											  }
										  }
									  }
								  }
							  }
						  }
					  }
				  }
			  }
		  }
	  }
  }
  y_ -= a;
  
  if(IsFocus == "n"){
//---------------------------
//---------------------------
	  if( arguments[0] != null){
		this.PosX = x_;
		this.Obj.style.left = parseInt(x_) +"px";
	  }
	  if( arguments[1] != null){
		this.PosY = y_;
		this.Obj.style.top  = parseInt(y_) +"px";
	  }
  }
}
//---------------------------
function DIV_Replace( x_, y_){
  //-- Calcul Delta deplacement
  var Delta_X = (x_ -O_DivScroll.PosX) *Rapport;
  var Delta_Y = (y_ -O_DivScroll.PosY) *Rapport;
  //-- Test si fin deplacement
  if((( Delta_Y < Mini)&&( Delta_Y > -Mini))&&
     (( Delta_X < Mini)&&( Delta_X > -Mini))){
    clearInterval( IdTimer_1);
    O_DivScroll.Move( x_, y_);
  }
  else{
    O_DivScroll.Move( O_DivScroll.PosX +Delta_X, O_DivScroll.PosY +Delta_Y);
  }
}
//------------------------
function DIV_CheckScroll(){
  var Scroll  = GetScrollPage();
  //-- New position  du menu
  O_DivScroll.NewX = Scroll.left +O_DivScroll.DebX;
  O_DivScroll.NewY = Scroll.top  +O_DivScroll.DebY;
  //-- Si pas la bonne Position
  if(( O_DivScroll.PosY != O_DivScroll.NewY)||( O_DivScroll.PosX != O_DivScroll.NewX)){
    //-- Clear l'encours
    clearInterval( IdTimer_1);
    IdTimer_1 = setInterval("DIV_Replace(" + O_DivScroll.NewX +"," + O_DivScroll.NewY +")", 1);
  }
  return( true);
}
//-----------------------
function DIV_InitScroll(){
//---------------------------
//---------------------------
  maxY = getDocumentHeight();
//---------------------------
//---------------------------
  //-- Recup position Objet
  O_DivScroll  = new DIV_Scroll('DIV_MOVE');
  //-- Lance inspection si existe
  if( O_DivScroll.Obj)
    IdTimer_2 = setInterval('DIV_CheckScroll()',1);
}
//========================================
Add_Event( window, 'load', DIV_InitScroll);
//-- EOF --

//---------------------------
//---------------------------

function scrollStop(){
	IsFocus = "y";
}

function scrollStart(){
	IsFocus = "n";
}

/*function brandsDisplay(){
	if (document.getElementById)
		document.getElementById('Brands').style.visibility="visible";
	if (document.all && !document.getElementById)
		document.all['Brands'].style.visibility="visible";
	if (document.layers)
		document.layers['Brands'].visibility="visible";
}

function brandsHide(){
	if (document.getElementById)
		document.getElementById('Brands').style.visibility="hidden";
	if (document.all && !document.getElementById)
		document.all['Brands'].style.visibility="hidden";
	if (document.layers)
		document.layers['Brands'].visibility="hidden";
}*/