// JavaScript Document
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 ShowDiv(iDivId){
	for(i = 1; i <= 6; i++) {
		HideDiv(i);
	}
	document.getElementById("divDropDown" + iDivId).style.display = "block";
	document.getElementById("divDropDown" + iDivId).style.visibility = "visible";
}

function HideDiv(iDivId) {
	document.getElementById("divDropDown" + iDivId).style.display = "none";
	document.getElementById("divDropDown" + iDivId).style.visibility = "hidden";
}

function HideAllDivs(){
	for(i = 1; i < 6; i++) {
		HideDiv(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 ValidateDate(dateFieldName) {
	//This function checks for a valid date
	var textField = window.event.srcElement.value;
	var textFieldId = window.event.srcElement.id;

	if(textField != "") {
		if (!isValidDate(textField)) {
			document.all[dateFieldName].createTextRange();
			document.all[dateFieldName].select();
		}
	}
	return;
}

function isValidDate(dateStr) {

	// Checks for the following valid date formats:
	// MM/DD/YY  MM/DD/YYYY  MM-DD-YY  MM-DD-YYYY
	// Also separates date into month, day, and year variables
	var datePat = /^(\d{1,2})(\/|-)(\d{1,2})\2(\d{2}|\d{4})$/;

	// To require a 4 digit year entry, use this line instead:
	//var datePat = /^(\d{1,2})(\/|-)(\d{1,2})\2(\d{4})$/;

	var matchArray = dateStr.match(datePat); // is the format ok?
	if (matchArray == null) {
		alert("Date is not in a valid format.");
		return false;
	}

	month = matchArray[1]; // parse date into variables
	day = matchArray[3];
	year = matchArray[4];

	if (month < 1 || month > 12) { // check month range
		alert("Month must be between 1 and 12.");
		return false;
	
	}
	
	if (day < 1 || day > 31) {
		alert("Day must be between 1 and 31.");
		return false;
	}
	
	if ((month==4 || month==6 || month==9 || month==11) && day==31) {
		alert("Month "+month+" doesn't have 31 days!");
		return false;
	}
	
	if (month == 2) { // check for february 29th
		var isleap = (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0));
		if (day>29 || (day==29 && !isleap)) {
			alert("February " + year + " doesn't have " + day + " days!");
			return false;
		}
	}
	
	return true;  // date is valid

}