function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function loginUser() {
	document.login.action="login.php";
	document.login.method="POST";
	document.login.submit();
}

function logoff() {
	document.logoff.submit();
}

function changeorder(field, way) {
	document.form1.input_order.value=field;
	document.form1.input_ascdes.value=way;
	document.form1.method="POST";
	document.form1.action="history.php";
	document.form1.submit();
}

function checkfrm() {
	var frm = document.form1;
	if(!isDate(frm.Year.value, frm.Month.value, frm.Day.value) ) {
		alert("Invalid date!");
		return false;
	}
	return true;
}

function popup(mylink, windowname) {
	if (! window.focus)
		return true;
	var href;
	if (typeof(mylink) == 'string')
		href=mylink;
	else
		href=mylink.href;
	window.open(href, windowname, 'width=510,height=540,scrollbars=yes,left=0,top=0');
	return false;
}

function popup2(mylink, windowname) {
	if (! window.focus)
		return true;
	var href;
	if (typeof(mylink) == 'string')
		href=mylink;
	else
		href=mylink.href;
	window.open(href, windowname, 'width=710,height=500,scrollbars=yes,left=80,top=60');
	return false;
}

function popup3(mylink, windowname) {
	if (! window.focus)
		return true;
	var href;
	if (typeof(mylink) == 'string')
		href=mylink;
	else
		href=mylink.href;
	window.open(href, windowname, 'width=300,height=300,scrollbars=yes,left=80,top=60');
	return false;
}

function openWinButton() {
    open('about:blank');
}