function Ajax(){        
    this.request = request;
	this.updateStylesheets = updateStylesheets;
}

function request(type, url, data, extra_data, target){
   $.ajax({
   type: type,
   url: url,
   data: data,
   success: function(msg){
        Grid.refresh(extra_data, target);
   }
 });
}

function updateStylesheets() {
	var i,a,s;
	a=document.getElementsByTagName('link');
	for(i=0;i<a.length;i++) {
		s=a[i];
		if(s.rel.toLowerCase().indexOf('stylesheet')>=0&&s.href) {
			var h=s.href.replace(/(&|\\?)forceReload=d /,'');
			s.href=h+(h.indexOf('?')>=0?'&':'?')+'forceReload='+(new Date().valueOf());
		}
	}
}