function CheckOK(){
	frm=document.forms[0]
	if(frm.chkOK.checked)
		{frm.btOK.disabled=false}
	else
		{frm.btOK.disabled=true}
}

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
	return false;
}

function changeImages() {
	//if (document.images && (preloadFlag == true)) {
	if (document.images){
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		bt_00 = newImage("img/header_back.jpg");
		preloadFlag = true;
	}
}

function MsgBox(msg){
	var agree=confirm(msg);
	if (agree) return true ;
	else return false ;
}

function info(URL) {
	day = new Date();
	id = day.getTime();
	xresnow=680;//resolucion de ventana pop-up
	yresnow=650;
	eval("page" + id + " = window.open(URL, '" + id + "', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=" + xresnow + ",height=" + yresnow + ",left = " + ((screen.availWidth/2)-(xresnow/2)) + ",top = " + ((screen.availHeight/2)-(yresnow/2)) + "');");
}