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_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_showHideLayers() { //v6.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}

var isNN,isIE;
if (parseInt(navigator.appVersion.charAt(0))>=4){
	//alert(navigator.appName);
	isNN=(navigator.appName=="Netscape")?1:0;
	isIE=(navigator.appName.indexOf("Microsoft")!=-1)?1:0;
}
if(isIE) {
	document.open();
	document.write('<style type="text/css">.menu a{ width:100%; }</style>');
	document.close();
}
function openWin(page,w,h){
	w = window.open(page,"","width="+w+",height="+h);
	w.focus();
}
function printArticle() {
	if (window.print) {
		setTimeout('window.print();',200);
	}
	else if (agt.indexOf("mac") != -1) {
		alert("Press 'Cmd+p' on your keyboard to print article.");
	}
	else {
		alert("Press 'Ctrl+p' on your keyboard to print article.")
	}
}
function hideMenus(lay1,lay2){
	MM_showHideLayers(lay1,'','hide');
	MM_showHideLayers(lay2,'','hide');
}
function showMenu(menu_id, back_id, link_id, show, delay)
{
	if (show){
		MM_showHideLayers(menu_id,'','show');
		MM_showHideLayers(back_id,'','show');
		if (typeof document.getElementById(link_id).s1 != "undefined"){
			window.clearTimeout(document.getElementById(link_id).s1);
		}
	} else {
		if (delay){
			document.getElementById(link_id).s1 = window.setTimeout("MM_showHideLayers('"+menu_id+"','','hide');MM_showHideLayers('"+back_id+"','','hide');",500);
		} else {
			MM_showHideLayers(menu_id,'','hide');
			MM_showHideLayers(back_id,'','hide');
			window.clearTimeout(document.getElementById(link_id).s1);
		}
	}
}


function ValidateUnsubscribe(){
	var msg="";
	if (document.Form1.txtEmail.value=="")
		msg+="Please enter your email.\n"	
	else{
		var strvalmail=IsValidEmail(document.getElementById("txtEmail"));
		if (strvalmail.length>0)
			msg+="Please enter a valid email.\n"
	}
	if (msg==""){
		return true;
		}
	else{
		alert(msg);
		return false;
	}
}

function IsValidEmail(txt){
    var stremail="";
	if(txt.value !=""){ 
		var goodEmail = txt.value.match(/\b(^(\S+@).+((\.com)|(\.net)|(\.edu)|(\.mil)|(\.gov)|(\.org)|(\..{2,2}))$)\b/gi);
		if (goodEmail){
		    return true;
		} else {
			stremail="Invalid email.\n";
			return stremail;
		}
	}
}