var DOM = (document.getElementById ? true : false);
var IE  = (document.all && !DOM ? true : false);
var NS4 = (document.layers ? true : false);

var NAV_OK   = (DOM || IE || NS4);
var NETSCAPE = (navigator.appName == "Netscape");

var Mouse_X;           // Position X en Cours de la Souris
var Mouse_Y;           // Position Y en Cours de la Souris
var TopIndex = 1;      // Z-Index interne
var Decal_X  = 15;      // Décalage X entre Pointeur Souris et Bulle
var Decal_Y  = 15;      // Décalage Y entre Pointeur Souris et Bulle
var bBulle   = false;  // Flag Affichage de la Bulle



function GetObjet(div_)
{
	if(DOM) return document.getElementById(div_);
	if(IE)  return document.all[div_];
	if(NS4) return document.layers[div_];
}



function GetStyle(div_)
{
	return(NS4 ? GetObjet(div_) : GetObjet(div_).style);
}



function ObjHide(div_)
{
	var Obj = null;
	if(div_)
	{
		Obj = GetStyle(div_);
		if(Obj)
		{
			Obj.visibility = "hidden";
		}
	}
	return(true);
}



function ObjShow(div_,z_)
{
	var Obj = null;
	if(div_)
	{
		Obj = GetStyle(div_);
		if(Obj)
		{
			Obj.visibility = "visible";
			if(arguments[1] != null) Obj.zIndex = z_;
      else                     Obj.zIndex = TopIndex++;
		}
	}
	return(true);
}



function ObjWrite(div_,html_)
{
	var Obj;
	Obj = GetObjet(div_);
	if(Obj)
	{
		with(Obj)
		{
    	if(!NS4)
    	{
      	innerHTML = html_;
      }
			else
			{
				document.open();
				document.write(html_);
				document.close();
			}
    }
  }
}



function ObjMoveTo(div_,x_,y_)
{
	var Obj = null;
	var Arg = arguments;
	if(div_)
	{
		Obj = GetStyle(div_);
		if(Obj)
		{
			if(Arg[1] != null) Obj.left = x_ +"px";
			if(Arg[2] != null) Obj.top  = y_ +"px";
		}
	}
}



function ObjShowAll(div_,x_,y_,z_)
{
	var Obj = GetObjet(div_);
	var DocRef;
	var MaxX, MaxY;
	var Top,  Left;
	var Haut, Larg;
	var SavY = y_;

	if(Obj)
	{
		// -- Récupère les dimensions fenêtre et DIV
		if(NETSCAPE)
		{
			with(window)
			{
				Left = pageXOffset;
				Top  = pageYOffset;
				MaxX = innerWidth;
				MaxY = innerHeight;
				if(MaxX > document.width)  MaxX = document.width;
				if(MaxY > document.height) MaxY = document.height;
				MaxX += Left;
				MaxY += Top;
			}
			if(NS4)
			{
				Larg = Obj.clip.width;
				Haut = Obj.clip.height;
			}
			else
			{
				Larg = Obj.offsetWidth;
				Haut = Obj.offsetHeight;
			}
		}
		else
		{
			if(document.documentElement && document.documentElement.clientWidth) DocRef = document.documentElement;
			else                                                                 DocRef = document.body;

			with(DocRef)
			{
				Left = scrollLeft;
				Top  = scrollTop;
				MaxX = Left + clientWidth;
				MaxY = Top  + clientHeight;
			}

			Larg = Obj.scrollWidth;
			Haut = Obj.scrollHeight;
		}

		//-- Réajuste dimension fenêtre
		MaxX -= Larg;
		MaxY -= Haut;
		
		//-- Application Bornage
		if(x_ > MaxX) x_ = MaxX;
		if(x_ < Left) x_ = Left;
		if(y_ > MaxY) y_ = MaxY;
		if(y_ < Top)  y_ = Top;

		//-- si en bas On réajuste
		//-- pour que la bulle ne prenne pas le focus
		if(y_== MaxY)
		{
			var DeltaY = MaxY - SavY;
			y_ = MaxY - DeltaY - Haut - 2*Decal_Y;
		}
		
		//-- On place la Bulle
		ObjMoveTo(div_,x_,y_);
		ObjShow(div_,z_);
	}
}



function BulleWrite(titre_,txt_)
{
	var Obj;
	var Html;
	Obj = GetObjet('BULLE');
	if(Obj)
	{
		Html  = "<div class='BULLE' nowrap>";
		if(titre_ != '') Html += "<p>" + titre_ + "</p>";
		Html += "<span>" + txt_ + "</span>";
		Html += "</div>";
		ObjWrite('BULLE', Html);
		ObjShowAll('BULLE', Mouse_X + Decal_X, Mouse_Y + Decal_Y, 1000);
		bBulle = true;
		return(true);
	}
	return(false);
}



function BulleHide()
{
	ObjWrite('BULLE', '&nbsp;');
	ObjHide('BULLE');
	ObjMoveTo('BULLE',0,0);
	bBulle = false;
	return(true);
}



function WhereMouse(e)
{
	var DocRef;

	if(NETSCAPE)
	{
		Mouse_X = e.pageX;
		Mouse_Y = e.pageY;
	}
	else
	{
		if(document.documentElement && document.documentElement.clientWidth) DocRef = document.documentElement;
		else                                                                 DocRef = document.body;

		Mouse_X = event.clientX + DocRef.scrollLeft;
		Mouse_Y = event.clientY + DocRef.scrollTop;
	}
	// -- La bulle est affichée, on la place au bon endroit
	if(bBulle) ObjShowAll('BULLE', Mouse_X + Decal_X, Mouse_Y + Decal_Y, 1000);
}


if(NETSCAPE) window.captureEvents(Event.MOUSEMOVE);
document.onmousemove = WhereMouse;

//-- Création du DIV Bulle
if(!NS4)
{
	var Html = "<div id='BULLE' style='position:absolute; left:auto; top:auto; width:auto; height:auto; z-index:0; visibility:hidden;'></div>";
	document.write(Html);
}