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];}
	}

// form validation


// check empty function. Return either error message, or NULL
function isEmpty( fieldname, s ) {
	var error = "";
	if (s.length == 0) {
		return fieldname + " - This field is empty.\n";
	}
	// else
	return error;
}

// check for proper email format.  Return either the error message, or NULL
function checkEmail( fieldname, s ) {
	var error="";

	// only test if there IS an email that was entered (it's optional).
	if (s.length > 0) {
			
		var emailFilter=/^.+@.+\..{2,3}$/;
		if (!(emailFilter.test(s))) { 
		   error = fieldname + " - Please enter a valid email address.\n";
		}
		else {
			//test email for illegal characters
			var illegalChars= /[\(\)\<\>\,\;\:\\\"\[\]]/
			 if (s.match(illegalChars)) {
				error = fieldname + " - The email address contains illegal characters.\n";
			 }
		} //if(!emailFilter.test(s))
		
	} //if(s.length>0)
	return error;    
}