/*
common javascript functions included on all pages throughout site
*/

// function to allow attaching of functions to objects
// used to get around onLoad issues (below)
// USAGE: addEvent(window, 'load', initSomething)
function addEvent(obj, evType, fn, useCapture){
	if (obj.addEventListener){
		obj.addEventListener(evType, fn, useCapture);
		return true;
	} else if (obj.attachEvent){
		var r = obj.attachEvent("on"+evType, fn);
		return r;
	} else {
		alert("Handler could not be attached");
	}
}

//change the url of a page
function changePage(url) {
	if (url != '') location.href = url;
}

//display a div
function displayBlock(ID) {
	if (ID != '') {	
		document.getElementByID(ID).style.display = 'block';
	}
}

//generic window opener
function openWin(url, winName, specs) {
	if (winName == '') winName = 'win';	
	var win1 = window.open(url, winName, specs);								
	win1.focus();
}

//clear all form fields
//whichForm: name of form we're dealing with
//ignoreFields: comma-delimited list of field names we don't want to touch
function clearForm(whichForm, ignoreFields) {	
	for (var i=0; i<whichForm.elements.length; i++) {
		curElement = whichForm.elements[i];
		//alert(curElement.type)
		if (ignoreFields.indexOf(',' + curElement.name + ',') == -1) {
			if (curElement.type == 'text') {		
				curElement.value = '';
			}
			else if (curElement.type == 'select-one') {		
				curElement.selectedIndex = 0;
			}		
			else if (curElement.type == 'checkbox') {		
				curElement.checked = false;
			}
		}
	}
}

//show all select menus on a page
function showSelectMenus() {
	for (j=0; j<document.forms.length; j++) {		
		for (i=0; i<document.forms[j].elements.length; i++) {
			curElement = document.forms[j].elements[i];
			if (curElement.type == 'select-one') {		
				curElement.style.visibility = 'visible';
			}
		}
	}
}

//hide all select menus on a page
function hideSelectMenus(ignoreFields) {
	for (j=0; j<document.forms.length; j++) {		
		for (i=0; i<document.forms[j].elements.length; i++) {
			curElement = document.forms[j].elements[i];
			
			if (ignoreFields.indexOf(',' + curElement.name + ',') == -1) {
				if (curElement.type == 'select-one') {		
					curElement.style.visibility = 'hidden';
				}
			}
		}
	}
}

//open  window for large photo
function enlargePhoto(img) {
	window.open('closeup.cfm?img=' + escape(img),'win_photolib_closeup','toolbar=no,status=no,resizable=yes,scrollbars=yes,width=300,height=300');
}


//hide user emails on site so they can't be farmed by spiders
function hideEmail(domain, user, strDisplay) {
	document.write('<a href=\"mailto:' + user + '@' + domain + '\">');
	if (strDisplay == null || strDisplay == '') {
		document.write(user + '@' + domain + '</a>');
	}
	else {
		document.write(strDisplay + '</a>');
	}
}

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_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];}}
}


//count characters left in a form field
function textCounter(field, countfield, maxlimit) {
	if (field.value.length > maxlimit) // if too long...this trims it!
		field.value = field.value.substring(0, maxlimit);
	else // otherwise, update 'characters left' counter
		countfield.value = maxlimit - field.value.length;
}



//create function, it expects 2 values.
function insertAfter(newElement,targetElement) {
	//target is what you want it to go after. Look for this elements parent.
	var parent = targetElement.parentNode;
	//if the parents lastchild is the targetElement...
	if(parent.lastchild == targetElement) {
		//add the newElement after the target element.
		parent.appendChild(newElement);
	} else {
		// else the target has siblings, insert the new element between the target and it's next sibling.
		parent.insertBefore(newElement, targetElement.nextSibling);
	}
}


function setMaxLength() {
	var x = document.getElementsByTagName('textarea');
	var counter = document.createElement('div');
	counter.className = 'counter';
	for (var i=0;i<x.length;i++) {
		if (x[i].getAttribute('maxlength')) {
			var counterClone = counter.cloneNode(true);
			counterClone.relatedElement = x[i];
			counterClone.innerHTML = '<span>0</span>/'+x[i].getAttribute('maxlength');
			x[i].parentNode.insertBefore(counterClone,x[i].nextSibling);
			x[i].relatedElement = counterClone.getElementsByTagName('span')[0];

			x[i].onkeyup = x[i].onchange = checkMaxLength;
			x[i].onkeyup();
		}
	}
}

function checkMaxLength() {
	var maxLength = this.getAttribute('maxlength');
	var currentLength = this.value.length;
	if (currentLength > maxLength) {
		this.relatedElement.className = 'toomuch';
		var parentDiv = this.parentNode;
		var y = parentDiv.getElementsByTagName('span');
		for (var j=0;j<y.length;j++) {
			if (y[j].id == 'maxlengthWarning') {
				y[j].style.display = 'block';
			}
		}
		//$('maxlengthWarning').style.display = 'block';
	}
	else {
		this.relatedElement.className = '';
		$('maxlengthWarning').style.display = 'none';
	}
	this.relatedElement.firstChild.nodeValue = currentLength;
	// not innerHTML
}