function SetStyleCookie(cookieValue){

var expires = new Date();
expires.setUTCFullYear(expires.getUTCFullYear() - 1);
document.cookie = 'StyleCookie=; expires=' + expires.toUTCString() + '; path=/';


expires = new Date();
expires.setUTCFullYear(expires.getUTCFullYear() + 1);
document.cookie = 'StyleCookie='+escape(cookieValue)+'; expires=' + expires.toUTCString() + '; path=/';

}  

var zoomMin=-1;
var zoomMax=3;
function ZoomOut() {
var wrapperClass = document.getElementById('wrapper').className;
var ix=wrapperClass.indexOf("zoom");
if(ix>-1) {
	var zoomActual=wrapperClass.substring(ix+4); 
		zoomActual--;
		if(zoomActual>=zoomMin){
			document.getElementById('wrapper').className = wrapperClass.substring(0,ix)+'zoom'+zoomActual;
			SetStyleCookie(zoomActual);
		}
} 
}

function ZoomIn() {

	var wrapperClass = document.getElementById('wrapper').className;
var ix=wrapperClass.indexOf("zoom");
if(ix>-1) {
	var zoomActual=wrapperClass.substring(ix+4); 
		zoomActual++;
		if(zoomActual<=zoomMax){
			document.getElementById('wrapper').className = wrapperClass.substring(0,ix)+'zoom'+zoomActual;
			SetStyleCookie(zoomActual);
		}
} 
}