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_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 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];}
}

//Jan 22, 2006
//force integer & dot keypress
//somsarit@hotmail.com
function ChkNumKey() {
	var ek = event.keyCode;
	if (ek < 48 || ek > 57) {
		alert("This field value must be a number 0 - 9 only.");
		event.returnValue = false;
	}
}


//Aug 14, 2005
//check email format 
//somsarit@hotmail.com
function ChkValidEmail(sEmail){
	var reg1 = /(@.*@)|(\.\.)|(@\.)|(\.@)|(^\.)/; // not valid
	var reg2 = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,3}|[0-9]{1,3})(\]?)$/; // valid        
	if(!reg1.test(sEmail) && reg2.test(sEmail)) { // if syntax is valid
		return true;
	}else{
		return false;

	}
}

//journal tools
function SaveArticle(contentID) {
	window.location = "save_to_archive.php?content_id=" + contentID;
}

function PrintArticle(contentID) {
	window.open("print_content.php?content_id=" + contentID, "print_content", "width=700, height=600, left=0, top=0, menubar=no, status=no, location=no, toolbar=no, scrollbars=yes, resizable=no");
}

function SendArticle(contentID) {
	window.open("send_content.php?content_id=" + contentID, "print_content", "width=400, height=300, left=0, top=0, menubar=no, status=no, location=no, toolbar=no, scrollbars=yes, resizable=no");
}

//validate function
function ConfirmDelete(url) {
	if (confirm("Please confirm you want to delete this item and all related information.")) {
		window.location = url;
	}
}

function ChkValidLogin(frm) {
	var msg = "";
	if (frm.txt_username.value == "") {
		alert("Please enter your username.");
		frm.txt_username.focus();
		return false;
	}
	if (frm.txt_password.value == "") {
		alert("Please enter your password.");
		frm.txt_password.focus();
		return false;
	}
}

function ChkValidForgot(frm) {
	var msg = "";
	if (frm.txt_username.value == "") {
		alert("Please enter your username.");
		frm.txt_username.focus();
		return false;
	}
	if (frm.txt_email.value == "") {
		alert("Please enter your email.");
		frm.txt_username.focus();
		return false;
	}
	else if (frm.txt_email.value != "" && !ChkValidEmail(frm.txt_email.value)) {
		alert("Your email is invalid.");
		frm.txt_username.focus();
		return false;
	}
}