function open_grafik()
{
	var date_from;
	var date_to;
	var add_str = '';
	if(date_from){
		add_str += '&t1='+date_from;
	}
	if(date_to) {
		add_str += '&t2='+date_to;
	}
	d = new Date();
	var file = '/grafik.php?s='+d.getTime()+add_str;
	OpenDialog(file, 750, 600);
}

function draw_graph()
{
	
	var date_from = document.getElementById("date_from").value;
	var date_to = document.getElementById("date_to").value;	
	var add_str = '';
	if(date_from){
		add_str += '%26t1='+date_from;
	}
	if(date_to) {
		add_str += '%26t2='+date_to;
	}

	d = new Date();
	var data_file = "/data.php"+"?s="+d.getTime()+add_str;
	swfobject.embedSWF(
			"/tools/open-flash-chart.swf", "graph",
			"700", "300", "9.0.0", "expressInstall.swf",
			{"data-file":data_file});	
}