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];}
}


function trim(inputString) {
// **** Remove leading and trailing spaces ****

	//Make sure input is string, otherwise return input
	if (typeof inputString != "string") {
		return inputString;
	}

	var retValue = inputString;
	var ch = retValue.substring(0, 1);

	while (ch == " ") {
	//Check for leading spaces and remove
	retValue = retValue.substring(1, retValue.length);
	ch = retValue.substring(0, 1);
	}

	ch = retValue.substring(retValue.length-1, retValue.length);
	while (ch == " ") {
	//Check for trailing spaces and remove
	retValue = retValue.substring(0, retValue.length-1);
	ch = retValue.substring(retValue.length-1, retValue.length);
	}

	return retValue;
}


function isEmail (s)
{
    if (typeof s != "string") {
	return false;
	}

    // there must be >= 1 character before @, so we
    // start looking at character position 1
    // (i.e. second character)
    var i = 1;
    var sLength = s.length;

    //don't even bother if string is less than 4 chars ("a@b.c".length=5)
    if (!sLength > 4){
	return false;
	}

    // look for @
    while ((i < sLength) && (s.charAt(i) != "@"))
    {
	i++
    }

    if ((i >= sLength) || (s.charAt(i) != "@")) return false;
    else i += 2;

    // look for .
    while ((i < sLength) && (s.charAt(i) != "."))
    { i++
    }

    // there must be at least one character after the .
    if ((i >= sLength - 1) || (s.charAt(i) != ".")) return false;
    else return true;
}

function ChkData(){

	allOk=true;
	
	if (trim(document.newsform.email.value).length == 0 && allOk)
	{
		alert("Please enter your email address");
		document.newsform.email.focus();
		allOk = false;
		return allOk;
	} else {
		if (!isEmail(document.newsform.email.value)) {
			alert("Your Email address is invalid");
			document.newsform.email.focus();
			allOk = false;
			return allOk;			
		}		
	}
	
	if (allOk){
      		return true;
	}
	
}