var requiredText = " is a required field";
var validEmail = " is not a valid email address";
var clearText = " contains invalid characters, please use plain text only";


function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);

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_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; }
}

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_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 getElementTop(obj) {
	var y = 0;
	var elm;
	if(typeof(obj) == "object"){
		elm = obj;
	} else {
		elm = document.getElementById(obj);
	}
	
	while (elm != null) {
		y+= elm.offsetTop;
		elm = elm.offsetParent;
	}
	return parseInt(y);
}

function showErrors(errors) {
	var errorMsg = "";
	for (var i=0; i<errors.length; i++) {
		errorMsg += errors[i];
		if (i < errors.length - 1) {
			errorMsg += "\n";
		}
	}
	alert(errorMsg);
}

function validateEmail(text) {
	var regex =	/^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,3}|[0-9]{1,3})(\]?)$/; 
    var result = regex.exec(text);
    if(!result && debug) {
		alert("Failed to validate '" + text + "' with regex '" + regex + "'");
    }
    
    if (!result) {
		return "'" + text + "' " + validEmail;
    } 
    return null;
}

function validateRequired(text, fieldName, initialText) {
	var success = !isWhitespace(text);
	if (!success) {
		return fieldName + requiredText;
	} else if (initialText && text == initialText) {
		return fieldName + requiredText;
	}
	return null;
}

function validateCleanText(text, fieldName) {
	var regex =	/^[a-zA-Z0-9,\s=\/_.\-!?\']+$/; 
    var result = regex.exec(text);
    if(!result && debug) {
		alert("Failed to validate '" + text + "' with regex '" + regex + "'");
    }
    if(!result) {
		return fieldName + clearText;
    }
    return null;
}

function isEmpty(s){ 
	return ((s == null) || (s.length == 0)) 
}

// whitespace characters
var whitespace = " \t\n\r";

function isWhitespace (s)
{
    var i;

    // Is s empty?
    if (isEmpty(s)) return true;

    // Search through string's characters one by one
    // until we find a non-whitespace character.
    // When we do, return false; if we don't, return true.

    for (i = 0; i < s.length; i++)
    {
        // Check that current character isn't whitespace.
        var c = s.charAt(i);

        if (whitespace.indexOf(c) == -1) return false;
    }

    // All characters are whitespace.
    return true;
}