function jumpTo (path, confirmMessage) {
	var answer = confirm(confirmMessage);
	if (answer == 1) { location.href = path };
}

function goback () {
	history.go(-1);
}

function popup(url, width, height) {
	var x = (screen.width/2)-(width/2);
	var y = (screen.height/2)-(height/2);
	var rand = Math.floor(Math.random()*99999+1);
	window.open(url, url, 'width='+width+',height='+height+',location=0,toolbar=0,status=0,menubar=0,scrollbars=1,resizable=0,left='+x+',top='+y+'');
}