/*** Lecture, ecriture et suppresion de cookies ***/

// Ecriture d'un cookie
function  setCookie( sName, sValue, nDays ) {
					var expires = "";
					if ( nDays ) {
							var d = new Date();
							d.setTime( d.getTime() + nDays * 24 * 60 * 60 * 1000 );
							expires = "; expires=" + d.toGMTString();
					}
					document.cookie = sName + "=" + sValue + expires + "; path=/";
}
// Lecture d'un cookie
function  getCookie(sName) {
					var re = new RegExp( "(\;|^)[^;]*(" + sName + ")\=([^;]*)(;|$)" );
					var res = re.exec( document.cookie );
					return res != null ? res[3] : null;
}
// Suppression d'un cookie
function  removeCookie( name ) {
					setCookie( name, "", -1 );
}


/*** Zoom de la taille des polices ***/

// Lecture du cookie
var t = 1;

window.onload = function() {
	value = getCookie('taillePolice');
	if(value!=null && value!=0){
		t = parseFloat(value);
		zoom(0);
	}
}

function zoom(tmodif){
	t = t + tmodif;
	if(t < 1.5 && t > 0.7){
		document.getElementsByTagName("body")[0].style.fontSize = t + "em";
		// Ecriture du cookie
		 setCookie('taillePolice', t);
	}else{
			t = t - tmodif;
	}
}

/*** Popup ***/
function PopupCentrer(page,largeur,hauteur,options) {
  var top=(screen.height-hauteur)/2;
  var left=(screen.width-largeur)/2;
  window.open(page,"","top="+top+",left="+left+",width="+largeur+",height="+hauteur+","+options);
}