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_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 MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}



function replaceCharacters(conversionString,inChar,outChar)
{
  var convertedString = conversionString.split(inChar);
  convertedString = convertedString.join(outChar);
  return convertedString;
}

//FORM VALIDATION FUNCTIONS

// real email address - check for:
// 1 character + @ + 1 character + . + 1 character
//
// returns errormsg or false
//
function IsEmailError(emailStr) {

	var errormsg = "";

	var atLoc = emailStr.indexOf("@")
	var periodLoc = emailStr.lastIndexOf(".")

	var nameStr = emailStr.substring(0, atLoc)
	var domainStr = emailStr.substring(atLoc+1, periodLoc)
	var extensionStr = emailStr.substring(periodLoc+1, emailStr.length)
	
	if ( (atLoc > periodLoc) ||
				(atLoc == -1) ||
				(periodLoc == -1) ||
				(nameStr.length == 0) ||
				(domainStr.length == 0) ||
				(extensionStr.length == 0) ) {
			errormsg = errormsg + ('\n enter a valid E-mail address')
	}
	
	return errormsg;
	
}

// Check that a US zip code is valid
function IsValidZipCode(zipcode) {
	if ( zipcode.length == 5 && isNumeric(zipcode) ) return true;
	zipcode = removeChars(zipcode, ' ');
	zipcode = removeChars(zipcode, '-');
	if ( zipcode.length != 9 || (!isNumeric(zipcode)) ) return false;
   return true;
}


// Check that a Canadian postal code is valid
function IsValidPostalCode(postalcode) {
	if (postalcode.search) {
		postalcode = removeChars(postalcode, ' ');
		if (postalcode.length == 6 && postalcode.search(/^[a-zA-Z]\d[a-zA-Z]\d[a-zA-Z]\d$/) != -1) return true;
		else if (postalcode.length == 7 && postalcode.search(/^[a-zA-Z]\d[a-zA-Z]-\d[a-zA-Z]\d$/) != -1) return true;
		else return false;
	}
	return true;
}

// pass in a form field
//
// returns if any instances of checkbox or radiobutton are checked
//
function ValidateCheckRadio(a){
	for (var counter=0; counter < a.length; counter++) 
		if (a[counter].checked)
			return true;
	return false;
}

// pass in a form field and the specific value to test for
//
// returns if the specific value has been checked
//
function IsFieldChecked(a,b){
	for (var counter=0; counter < a.length; counter++) 
		if (a[counter].checked)
			if (a[counter].value == b)
				return true;
	return false;
}

// pass in a select field
//
// returns value of selected
// (used for compatability with Netscape)
//
function GetSelectedValue(a){
	var sIndex = a.selectedIndex;
	return a.options[sIndex].value;
}

// specialized function to check for required field of a checkbox array
//
function ValidateCheckbox( elementName ) {
	var fieldFound = false;
	var anyChecked = false;

	for ( i = 0; i < document.forms[0].length; i++) {
		if ( document.forms[0].elements[i].name == elementName ) {
			fieldFound = true;
		}
		else {
			if ( fieldFound )
				break;
		}

		if ( fieldFound ) {
			if ( document.forms[0].elements[i].checked == true ) {
				anyChecked = true;
				break;
			}
		}
	}

	return ( anyChecked );
	
}