function addEvent(obj, evType, fn) {
	if (obj.addEventListener) {
		obj.addEventListener(evType, fn, false);
		return true;
	}
	else if (obj.attachEvent) {
		var r = obj.attachEvent("on" + evType, fn);
		return r;
	}
}

function zoomIn(){
	document.getElementById('mapGoogle').className='zoom';
	document.getElementById('mapGoogle').setAttribute('class','zoom');
	document.getElementById('content').className='zoom';
	document.getElementById('content').setAttribute('class','zoom');
	document.getElementById('extra').className='zoom';
	document.getElementById('extra').setAttribute('class','zoom');
	document.getElementById('infoPlus').className='zoom';
	document.getElementById('infoPlus').setAttribute('class','zoom');
	document.getElementById('btnZoomPlus').style.display='none';
	document.getElementById('btnZoomMoins').style.display='block';
	var center=map.getCenter();
	map.checkResize();
	map.setCenter(center);
	map.zoomIn();
}

function zoomOut(){
	document.getElementById('mapGoogle').className='';
	document.getElementById('mapGoogle').removeAttribute('class');
	document.getElementById('content').className='';
	document.getElementById('content').removeAttribute('class');
	document.getElementById('extra').className='';
	document.getElementById('extra').removeAttribute('class');
	document.getElementById('infoPlus').className='';
	document.getElementById('infoPlus').removeAttribute('class');
	document.getElementById('btnZoomPlus').style.display='block';
	document.getElementById('btnZoomMoins').style.display='none';
	var center=map.getCenter();
	map.checkResize();
	map.setCenter(center);
	map.zoomOut();
}