var ExportButton = Class.create(SimpleButton, {
	initialize: function($super, element, gridID, format) {
		this.element = $(element);
		$super(element);
		this.gridID = gridID;
		this.format = (typeof format == "undefined") ? "CSV" : String(format).toUpperCase();
	},

	getDataSourceURL: function(){
		var dataSource = $(this.gridID).JSControl.DataSource();
		if (!dataSource) return void alert("Data source does not exist (id=\"" + this.gridID + "\")");
		return "/srv/" + dataSource.Feeder().ContName() + "/" + dataSource.Feeder().ObjName();
	},

	getURL: function(){
		var dataSourceURL = this.getDataSourceURL();
		if (!dataSourceURL) return "";
		var date=new Date();
		var params = { "Format": this.format, "Columns": $(this.gridID).JSControl.Columns(), "TimeZone": date.getTimezoneOffset() };
		var title=$(this.gridID).JSControl.Title();
		if (typeof(title)=="undefined") {
			var wnd=AControl.GetParentWindow(this.element);
			if (wnd) title=wnd.Title();
		}
		this.filename=title+"."+this.format.toLowerCase();
		if (typeof(this.filename) != "undefined") params["Filename"]=this.filename;
		return dataSourceURL + "/Export" + "?" + URLSerializeVS(params);
	},

	OnClick: function(event){
		GFileDownloader.Download(this.getURL());
	}
});