function Affiche(OBJ)
	{
	OBJ.style.visibility="visible";
	}
	
function Efface()
	{
	college.style.visibility="hidden";
	lycee.style.visibility="hidden";
	l_pro.style.visibility="hidden";
	l_tech.style.visibility="hidden";
	superieur.style.visibility="hidden";
	}
// Gestion  Popup générique
function OpenPopUp(url, popup, largeur, hauteur) {
	fenetreA=window.open(url,popup,"status=no,location=no,toolbar=no,directories=no,resizable=yes,width="+largeur+",height="+hauteur+",top=100,left=100");
}
function OpenPopUp_Scroll (url, popup, largeur, hauteur) {
	fenetreA=window.open(url,popup,"status=no,location=no,scrollbars=yes,toolbar=no,directories=no,resizable=yes,width="+largeur+",height="+hauteur+",top=100,left=100");
}
// Fin Gestion  Popup générique

function PopupHP(mypage,myname,w,h,scroll,pos)
		{
		if(pos=="random")
		   {
		   LeftPosition=(screen.width)?Math.floor(Math.random()*(screen.width-w)):100;TopPosition=(screen.height)?Math.floor(Math.random()*((screen.height-h)-75)):100;
		   }
		if(pos=="center")
		   {
		   LeftPosition=(screen.width)?(screen.width-w)/2:100;TopPosition=(screen.height)?(screen.height-h)/2:100;
		   }
		else if((pos!="center" && pos!="random") || pos==null)
		   {
		   LeftPosition=0;TopPosition=20
		   }
		settings='width='+w+',height='+h+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=no';
		win=window.open(mypage,myname,settings);
		}