function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_findObj(n, d) { //v3.0
  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); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
function search_engine()
{
	if (document.form1.SearchString.value == "")
	{
		alert ("Please enter a keyword");
	}
	else
	{
		document.form1.submit();
	}
}

//selectionne le browser

        if (parseInt(navigator.appVersion) >= 3)

        { rollOvers = 1; } else
            { rollOvers = 0; }

        boogieDown = "tuile"

        if (rollOvers) {

                j17off = new Image();
                j17off.src = "images/how8.gif";
                j17on = new Image();
                j17on.src = "images/how8a.gif";

                j18off = new Image();
                j18off.src = "images/how11.gif";
                j18on = new Image();
                j18on.src = "images/how11a.gif";

                j19off = new Image();
                j19off.src = "images/how13.gif";
                j19on = new Image();
                j19on.src = "images/how13a.gif";

                j20off = new Image();
                j20off.src = "images/how20.gif";
                j20on = new Image();
                j20on.src = "images/how20a.gif";

                j21off = new Image();
                j21off.src = "images/how25.gif";
                j21on = new Image();
                j21on.src = "images/how25a.gif";

                j22off = new Image();
                j22off.src = "images/how30.gif";
                j22on = new Image();
                j22on.src = "images/how30a.gif";

                j23off = new Image();
                j23off.src = "images/how32.gif";
                j23on = new Image();
                j23on.src = "images/how32a.gif";

                j24off = new Image();
                j24off.src = "images/how38.gif";
                j24on = new Image();
                j24on.src = "images/how38a.gif";

                j25off = new Image();
                j25off.src = "images/how42.gif";
                j25on = new Image();
                j25on.src = "images/how42a.gif";

                        }

        function img_act(imgName) {

        if (rollOvers) { imgOn = eval(imgName + "on.src");
                        document [imgName].src = imgOn;  }

                                }


        function img_inact(imgName) {

        if (rollOvers) { imgOff = eval(imgName + "off.src");
                         document [imgName].src = imgOff; }

                                    }