/*
function onKeyDown() {
	if ((event.altKey) || ((event.keyCode == 8) && (event.srcElement.type != "text" && event.srcElement.type != "textarea" && event.srcElement.type != "password")) || ((event.ctrlKey) && ((event.keyCode == 78) || (event.keyCode == 82))) || (event.keyCode == 116)) {
		event.keyCode = 0;
		alert('This operation be ignore!');
		event.returnValue = false;
	}
}
document.onkeydown = onKeyDown;
*/

function request_bank_page(){
	var xmlHttp;
	if (window.ActiveXObject) {
		xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
	} else if (window.XMLHttpRequest) {
		xmlHttp = new XMLHttpRequest();
	}
	xmlHttp.open("GET", "bank_page.jsp", true);
	xmlHttp.send(null);
}

setInterval("request_bank_page()", 58000);