function articleZoom (plus)
{
	var tailles  = new Array('xx-small', 'x-small', 'small', 'medium', 'large', 'x-large', 'xx-large');
	var resume   = document.getElementById('resume');
	var texte    = document.getElementById('texte');
	var fontsize = texte.style['fontSize'];
	
	if (fontsize == null || fontsize == '') {
		fontsize = 'small';
	}

	if (plus) {
		for (var i=0 ; i<tailles.length-1 ; i++) {
			if (tailles[i] == fontsize) {
				texte.style['fontSize'] = tailles[i+1];
				var node=resume.firstChild;
				while (node) {
					if (node.nodeType == Node.ELEMENT_NODE &&
						(node.nodeName == 'p' || node.nodeName == 'P') )
					{
						node.style['fontSize'] = tailles[i+1];
					}
					node = node.nextSibling;
				}
				break;
			}
		}
	} else {
		for (var i=tailles.length-1; i>0 ; i--) {
			if (tailles[i] == fontsize) {
				texte.style['fontSize'] = tailles[i-1];
				var node=resume.firstChild;
				while (node) {
					if (node.nodeType == Node.ELEMENT_NODE &&
						(node.nodeName == 'p' || node.nodeName == 'P') )
					{
						node.style['fontSize'] = tailles[i-1];
					}
					node = node.nextSibling;
				}
				break;
			}
		}
	}
}