function hmain() {
        var cadre = document.getElementById("cadre").offsetHeight;
        var Hauteur = cadre+25;
        document.getElementById("main").style.height = Hauteur + "px";
}


var Drag = {

	obj : null,

	init : function(o, oRoot, minX, maxX, minY, maxY, bSwapHorzRef, bSwapVertRef, fXMapper, fYMapper)
	{
		o.onmousedown	= Drag.start;

		o.hmode			= bSwapHorzRef ? false : true ;
		o.vmode			= bSwapVertRef ? false : true ;

		o.root = oRoot && oRoot != null ? oRoot : o ;

		if (o.hmode  && isNaN(parseInt(o.root.style.left  ))) o.root.style.left   = "0px";
		if (o.vmode  && isNaN(parseInt(o.root.style.top   ))) o.root.style.top    = "0px";
		if (!o.hmode && isNaN(parseInt(o.root.style.right ))) o.root.style.right  = "0px";
		if (!o.vmode && isNaN(parseInt(o.root.style.bottom))) o.root.style.bottom = "0px";

		o.minX	= typeof minX != 'undefined' ? minX : null;
		o.minY	= typeof minY != 'undefined' ? minY : null;
		o.maxX	= typeof maxX != 'undefined' ? maxX : null;
		o.maxY	= typeof maxY != 'undefined' ? maxY : null;

		o.xMapper = fXMapper ? fXMapper : null;
		o.yMapper = fYMapper ? fYMapper : null;

		o.root.onDragStart	= new Function();
		o.root.onDragEnd	= new Function();
		o.root.onDrag		= new Function();
	},

	start : function(e)
	{
		var o = Drag.obj = this;
		e = Drag.fixE(e);
		var y = parseInt(o.vmode ? o.root.style.top  : o.root.style.bottom);
		var x = parseInt(o.hmode ? o.root.style.left : o.root.style.right );
		o.root.onDragStart(x, y);

		o.lastMouseX	= e.clientX;
		o.lastMouseY	= e.clientY;

		if (o.hmode) {
			if (o.minX != null)	o.minMouseX	= e.clientX - x + o.minX;
			if (o.maxX != null)	o.maxMouseX	= o.minMouseX + o.maxX - o.minX;
		} else {
			if (o.minX != null) o.maxMouseX = -o.minX + e.clientX + x;
			if (o.maxX != null) o.minMouseX = -o.maxX + e.clientX + x;
		}

		if (o.vmode) {
			if (o.minY != null)	o.minMouseY	= e.clientY - y + o.minY;
			if (o.maxY != null)	o.maxMouseY	= o.minMouseY + o.maxY - o.minY;
		} else {
			if (o.minY != null) o.maxMouseY = -o.minY + e.clientY + y;
			if (o.maxY != null) o.minMouseY = -o.maxY + e.clientY + y;
		}

		document.onmousemove	= Drag.drag;
		document.onmouseup		= Drag.end;

		return false;
	},

	drag : function(e)
	{
		e = Drag.fixE(e);
		var o = Drag.obj;

		var ey	= e.clientY;
		var ex	= e.clientX;
		var y = parseInt(o.vmode ? o.root.style.top  : o.root.style.bottom);
		var x = parseInt(o.hmode ? o.root.style.left : o.root.style.right );
		var nx, ny;

		if (o.minX != null) ex = o.hmode ? Math.max(ex, o.minMouseX) : Math.min(ex, o.maxMouseX);
		if (o.maxX != null) ex = o.hmode ? Math.min(ex, o.maxMouseX) : Math.max(ex, o.minMouseX);
		if (o.minY != null) ey = o.vmode ? Math.max(ey, o.minMouseY) : Math.min(ey, o.maxMouseY);
		if (o.maxY != null) ey = o.vmode ? Math.min(ey, o.maxMouseY) : Math.max(ey, o.minMouseY);

		nx = x + ((ex - o.lastMouseX) * (o.hmode ? 1 : -1));
		ny = y + ((ey - o.lastMouseY) * (o.vmode ? 1 : -1));

		if (o.xMapper)		nx = o.xMapper(y)
		else if (o.yMapper)	ny = o.yMapper(x)

		Drag.obj.root.style[o.hmode ? "left" : "right"] = nx + "px";
		Drag.obj.root.style[o.vmode ? "top" : "bottom"] = ny + "px";
		Drag.obj.lastMouseX	= ex;
		Drag.obj.lastMouseY	= ey;

		Drag.obj.root.onDrag(nx, ny);
		return false;
	},

	end : function()
	{
		document.onmousemove = null;
		document.onmouseup   = null;
		Drag.obj.root.onDragEnd(	parseInt(Drag.obj.root.style[Drag.obj.hmode ? "left" : "right"]), 
									parseInt(Drag.obj.root.style[Drag.obj.vmode ? "top" : "bottom"]));
		Drag.obj = null;
	},

	fixE : function(e)
	{
		if (typeof e == 'undefined') e = window.event;
		if (typeof e.layerX == 'undefined') e.layerX = e.offsetX;
		if (typeof e.layerY == 'undefined') e.layerY = e.offsetY;
		return e;
	}
};




//We wrap all the code in an object so that it doesn't interfere with any other code
var scroller = {
  init:   function() {
  
  	// affiche ou non la barre de scroll en fonction de la longueur du contenu
	hauteurContent = document.getElementById("scroll_content").offsetHeight;
	boiboite = document.getElementById("scroll_container").offsetHeight;
	if (hauteurContent <= boiboite) {
		document.getElementById("scroll_scrollArea").style.display='none';
		document.getElementById("scroll_up").style.display='none';
		document.getElementById("scroll_down").style.display='none';
	} else {
		document.getElementById("scroll_scrollArea").style.display='block';
		document.getElementById("scroll_up").style.display='block';
		document.getElementById("scroll_down").style.display='block';
	}
  
  

    //collect the variables
    scroller.docH = document.getElementById("scroll_content").offsetHeight;
    scroller.contH = document.getElementById("scroll_container").offsetHeight;
    scroller.scrollAreaH = document.getElementById("scroll_scrollArea").offsetHeight;
      
    //calculate height of scroller and resize the scroller div
    //(however, we make sure that it isn't to small for long pages)
    scroller.scrollH = (scroller.contH * scroller.scrollAreaH) / scroller.docH;
    //if(scroller.scrollH < 15) scroller.scrollH = 15;
    document.getElementById("scroll_scroller").style.height = Math.round(scroller.scrollH) + "px";
    
    //what is the effective scroll distance once the scoller's height has been taken into account
    scroller.scrollDist = Math.round(scroller.scrollAreaH-scroller.scrollH);
    
    //make the scroller div draggable
    Drag.init(document.getElementById("scroll_scroller"),null,0,0,-1,scroller.scrollDist);
    
    //add ondrag function
    document.getElementById("scroll_scroller").onDrag = function (x,y) {
      var scrollY = parseInt(document.getElementById("scroll_scroller").style.top);
      var docY = 0 - (scrollY * (scroller.docH - scroller.contH) / scroller.scrollDist);
      document.getElementById("scroll_content").style.top = docY + "px";
    }
  }
}

onload = scroller.init;

var repeat  =   0;
function ScrollMeUp(repeate){
     var gap =   -30  ;
     if  (       repeate ==      1       )       gap     =       -1       ;
    if (    parseInt(document.getElementById('scroll_scroller').style.top) > 0 ){
        document.getElementById('scroll_scroller').style.top   =   parseInt(document.getElementById('scroll_scroller').style.top)+gap+'px';
        var temp    =  0    -   (   parseInt(document.getElementById('scroll_scroller').style.top)  /   (   parseInt(document.getElementById('scroll_container').offsetHeight)  -   parseInt(document.getElementById('scroll_scroller').style.height)    ))  *   (   parseInt(document.getElementById('scroll_content').offsetHeight)  -   parseInt(document.getElementById('scroll_container').offsetHeight));
        if ( temp    >   0   ){
		temp    =   0   ;
		document.getElementById('scroll_scroller').style.top   = "0px";
	}
    	document.getElementById('scroll_content').style.top    =   temp + "px";
    }
    if (    repeate  ==  1)
        setTimeout("if (repeat  !=  0)  ScrollMeUp(1)",10);
}
function ScrollMeDown(repeate){
    var gap =   30  ;
    if	(	repeate	==	1	)	gap	=	1	;
    if  (   parseInt(document.getElementById('scroll_container').offsetHeight) -   parseInt(document.getElementById('scroll_scroller').style.top) -   parseInt(document.getElementById('scroll_scroller').style.height)  <   gap ){
        gap =   parseInt(document.getElementById('scroll_container').offsetHeight) -   parseInt(document.getElementById('scroll_scroller').style.top) -   parseInt(document.getElementById('scroll_scroller').style.height);
    }
    if (    parseInt(document.getElementById('scroll_scroller').style.top) +   parseInt(document.getElementById('scroll_scroller').style.height)  <   parseInt(document.getElementById('scroll_container').offsetHeight)){
        document.getElementById('scroll_scroller').style.top   =   parseInt(document.getElementById('scroll_scroller').style.top)+gap+'px';
        var temp    =  0    -   (   parseInt(document.getElementById('scroll_scroller').style.top)  /   (   parseInt(document.getElementById('scroll_container').offsetHeight)  -   parseInt(document.getElementById('scroll_scroller').style.height)    ))  *   (   parseInt(document.getElementById('scroll_content').offsetHeight)  -   parseInt(document.getElementById('scroll_container').offsetHeight));
        document.getElementById('scroll_content').style.top    =   temp + "px";
    }else{
	document.getElementById('scroll_scroller').style.top   =   192 - parseInt(document.getElementById('scroll_scroller').style.height) + 'px';
    }
    if (    repeate  ==  1)
        setTimeout("if (repeat  !=  0   )   ScrollMeDown(1)",10);
}
	function handle(delta) {
		if (delta < 0){
				ScrollMeDown(0);
		}else{
				ScrollMeUp(0);
		}
	}

function wheel(event){
	var delta = 0;
	if (!event) /* For IE. */
		event = window.event;
	if (event.wheelDelta) { /* IE/Opera. */
		delta = event.wheelDelta/120;
		/** In Opera 9, delta differs in sign as compared to IE.
		 */
		if (window.opera)
			delta = -delta;
	} else if (event.detail) { /** Mozilla case. */
		/** In Mozilla, sign of delta is different than in IE.
		 * Also, delta is multiple of 3.
		 */
		delta = -event.detail/3;
	}
	if (delta)
		handle(delta);
}
function intercept(){
	if (window.addEventListener){
		document.getElementById('scr').addEventListener('DOMMouseScroll', wheel, false);
	}
	window.onmousewheel = document.onmousewheel = wheel;
}
function removeintercept(){
		if (window.addEventListener)
			window.removeEventListener('DOMMouseScroll', wheel, false);
		window.onmousewheel = document.onmousewheel = rien;
}
function rien(){
	return;
}
function code_clavier(key){
	if (key.keyCode	==	40	){
		if(parseInt(document.getElementById('scroll_scroller').style.top) +   parseInt(document.getElementById('scroll_scroller').style.height) + 30 <   parseInt(document.getElementById('scroll_container').offsetHeight))
			ScrollMeDown();
	}
	if (key.keyCode	==	38	){
		if(parseInt(document.getElementById('scroll_scroller').style.top) > 0)
			ScrollMeUp();
	}
}