/*compliments of Andrew Steeley, Micah Mood, and Jeremy Snyder,
  all fine fellow code monkeys.  these functions are basic and
	self-explanatory*/
var whitespace = " \t\n\r";	

function isRadioFieldEmpty(radField) 
{
	for (radIdx = 0; radIdx < radField.length; radIdx++) {
		if (radField[radIdx].checked)
			return false;
	}
	return true;
}

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

// returns true if the string 's' is composed entirely of whitespace
function isWhitespace (s)
{   var i;
    if (isEmpty(s)) return true;
    for (i = 0; i < s.length; i++)
    {   
        var c = s.charAt(i);
        if (whitespace.indexOf(c) == -1) return false;
    }
    return true;
}

/*function to make sure a radio box is selected
  on the tournament registration form*/
function isValid(theForm)
{
  if (isRadioFieldEmpty(theForm.radPlayer))
	  alert("You must select a player type.");
	else
	  theForm.submit();
}

/*function to make sure a radio box and chapter are
  both selected on the membership application*/
function isValidTwo(theForm)
{
	var msg = "";
	
  if (isRadioFieldEmpty(theForm.radPlayer))
	  msg = msg + "You must select a player type.\n";
	if (theForm.selChapter.value == '-1')
	  msg = msg + "You must select a chapter.\n";
	if ((theForm.radPlayer[2].checked) && ((isEmpty(theForm.txtBirthDate.value)) || (isWhitespace(theForm.txtBirthDate.value))))
	  msg = msg + "If the member is a junior, a birth date must be provided.\n";
		
  /*display errors or submit form*/	
	if (!(isEmpty(msg)))
		alert(msg);
	else
		theForm.submit();
}

/*function to display the tournaments by selected criteria*/
/*parameter - theCriteria; value of selected index     */
function doSort(theCriteria)
{
	 window.location.href = "tournament.cfm?SortCriteria=" + theCriteria;
}

/*clearly this code was generated and not hand written*/
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];}
}