function create_dialog(jqObj, options) {
	jqObj.dialog({
		autoOpen: false,
		modal: true,
		width: 'auto',
		hide: 'blind',
		position: 'center',
		resizable: false,
		overlay: {
			backgroundColor: '#000',
			opacity: 0.5
		}
	});

	if (options)
		jqObj.dialog('option', options);    
}

function str_repeat(string, count) {
	var i;
	var result = '';
	for (i = 0; i < count; i++) {
		result = result + string;
	}
	return result;
}

function sprintf(format, arg) {
	var result = '';
	var regexp = new RegExp('(.*)%(.*)\.(\.)f(.*)', 'i');
	var res = regexp.exec(format);
	if (res) {
		result = res[1];
		var precision = res[3];
		var number = ((precision > -1) ? Math.round(parseFloat(arg) * Math.pow(10, precision)) / Math.pow(10, precision): parseFloat(arg)).toString();
		if (number.indexOf('.') == -1) {
			result = result + number + '.' + str_repeat('0', precision);
			} else if (number.length - number.indexOf('.') - 1 < precision) {
			result = result + number + str_repeat('0', precision - (number.length - number.indexOf('.') - 1));
			} else {
			result = result + number;
		}
		result = result + res[4];

		return result;
		} else {
		return false;
	}
}

function showMsg(type, msg) {
	if (type == 'error') {
		$.achtung({message: msg, className: 'achtungFail', timeout: 0});
	} else if (type == 'success') {
		//$('.achtungFail').achtung('close');
		$.achtung({message: msg, className: 'achtungSuccess', timeout: 5});
	} else {
		alert('Unknown error');
	}
}

var indicator;
var indicator_count = 0;
function spi() {
	if (jQuery().achtung) {
		indicator_count++;
		if (indicator_count == 1)
			indicator = $.achtung({icon: 'wait-icon', disableClose: true, message: please_wait_lang, timeout: 0});
	}
}

function hpi() {
	if (jQuery().achtung) {
		indicator_count--;
		if (indicator_count == 0)
			indicator.achtung('close');
	}
}

function loadSafe(container, url, params, callback) {
	var submit_type = 'GET';
	if (typeof params === "string") {
		submit_type = 'POST';
	} else if (typeof params === "function") {
		callback = params;
		params = '';
	} else {
		params = '';
	}

	spi();
	$.ajax({
		'url': url,
		'type': submit_type,
		'data': params,
		'dataType': 'html',
		success: function(data){
			hpi();
			if (data.substr(0, 15) === '{"status":false') {
				try {
					var obj = eval('(' + data + ')');
					showMsg('error', obj.msg);
				} catch (err) { alert('Unknown error') }
			} else {
				if (typeof container === "object")
					container.html(data);
				if (typeof callback === "function")
					callback();
			}
		}
	});
}