function trim(str, chars) {
	return ltrim(rtrim(str, chars), chars);
}

function ltrim(str, chars) {
	chars = chars || "\\s";
	return str.replace(new RegExp("^[" + chars + "]+", "g"), "");
}

function rtrim(str, chars) {
	chars = chars || "\\s";
	return str.replace(new RegExp("[" + chars + "]+$", "g"), "");
}

function getBase() {
	if (location.host == 'projects.presencemultimedia.co.uk') {
		return '/executivecaregroup/';
	}
	if (location.host == 'dev.ne6design.co.uk') {
		return '/executivecaregroup/';
	}
	return '/';
}

function createAjaxObject() {
	var ro;
	var browser = navigator.appName;
	if (browser == "Microsoft Internet Explorer") {
		ro = new ActiveXObject("Microsoft.XMLHTTP");
	}
	else {
		ro = new XMLHttpRequest();
	}
	return ro;
}

function toggleItem(targetID, target2ID) {
	if (document.getElementById) {
		target = document.getElementById(targetID);
		target2 = document.getElementById(target2ID);
		if (target.style.display == "none") {
			target.style.display = "";
			target2.style.backgroundImage = "url('../images/triangle-open.gif')";
		} else {
			target.style.display = "none";
			target2.style.backgroundImage = "url('../images/triangle-close.gif')";
		}
	}
}

function setupURLJumperSelect() {
	// get all select elements with the class 'url_jump_select'
	var selects = getElementsByClass('url_jump_select', document, 'SELECT');
	// loop through, add event on change
	for (var i = 0; i < selects.length; i++) {
		selectElement = selects[i];
		// attach onclick function
		addEvent(selectElement, 'change', urlJumpSelect, false);
	}	
}

function urlJumpSelect(e) {
	// find the target
	var target = findTarget(e);
	var path = target.value;
	if (path.length > 0) {
		document.location.href = path;
	}
}

function setUpRadiosAndCheckboxes() {
	// get all select elements with the class 'url_jump_select'
	var inputs = document.getElementsByTagName('INPUT');
	// loop through, add class 'radio' if they are a radio or checkbox
	for (var i = 0; i < inputs.length; i++) {
		inputElement = inputs[i];
		if (inputElement.getAttribute('type') == 'checkbox' || inputElement.getAttribute('type') == 'radio') {
			// add class
			inputElement.className += ' radio';
		}
	}	
}

function toggleList(e) {
	
	// get a reference to the anchor and it's parentNode (the <li> element)
	if (window.event) {
		// IE does it differently... stores the event in a window.event object
		var thisA = window.event.srcElement;
		//alert(thisA);
		var thisLI = thisA.parentNode;
	} else {
		var thisA = this;
		var thisLI = this.parentNode;
	}
	// if this li has nested ul elements...
	if (thisLI.getElementsByTagName('ul').length > 0) {
		
		var toggleListTarget = thisLI.getElementsByTagName('ul')[0];
		//...toggle visibility of first ul
		if (toggleListTarget.style.display != 'none' ) {
			toggleListTarget.style.display = 'none';
			//thisA.style.color = '';
			thisA.style.backgroundImage = 'url(../images/arrowright.gif)';
			//closeListArrow();
		} else {
			toggleListTarget.style.display = '';
			//thisA.style.color = 'white';
			thisA.style.backgroundImage = 'url(../images/arrowdown.gif)';
			//expandListArrow();
		}
		// cancel bubble and href of this anchor
		cancelClick(e);
		// hack for Safari (stops browser following href link)
		thisA.onclick = function() { return false; }
	}
}

function setUpCollapsingList() {

	// find the toggle list
	var lists = getElementsByClass('collapsible_list', document, 'ul');
	
	for (var x = 0; x < lists.length; x++) {
		//list = document.getElementById('collapsingList');
		list = lists[x];
		// find all it's child UL elements
		var childLists = list.getElementsByTagName('ul');
		// hide them all
		for (var i = 0; i < childLists.length; i++) {
			var childList = childLists[i];
			childList.style.display = 'none';
		}
		
		// attach toggleList function to onclick of each anchor
		var childAnchors = list.getElementsByTagName('a');
		// hide them all
		for (var i = 0; i < childAnchors.length; i++) {
			var childAnchor = childAnchors[i];
			// attach toggleList function to onclick of each anchor
			addEvent(childAnchor, 'click', toggleList, false);
		}
	}
}

function getPathToRoot() {
	if (location.host == 'projects.presencemultimedia.co.uk') {
		return '/charliemilbank/';
	} else {
		return '/';
	}
}

function clearMe(thefield){
	if (thefield.defaultValue==thefield.value) {
		thefield.value = "";
	}
} 

function pop(ShowPage, intwidth, intheight) {

	var leftpos = (screen.width - intwidth) / 2;
	var toppos = (screen.height - intheight) / 2;
	var winprops = 'toolbar=0, scrollbars=1, location=0, statusbars=0, menubar=0, width=' + intwidth + ', height=' + intheight + ', left=' + leftpos + ', top=' + toppos + ', resizable=1';
    var popupwindow = window.open(ShowPage, 'poppage', winprops);

}

function in_array(stringToSearch, arrayToSearch) {
	for (s = 0; s < arrayToSearch.length; s++) {
		thisEntry = arrayToSearch[s].toString();
		if (thisEntry == stringToSearch) {
			return true;
		}
	}
	return false;
}

function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	}
	else {
		window.onload = function() {
			oldonload();
			func();
		}
	}
}

function addEvent(elm, evType, fn, useCapture) {
	// cross-browser event handling for IE5+, NS6 and Mozilla 
	// By Scott Andrew 
	if (elm.addEventListener) { 
		elm.addEventListener(evType, fn, useCapture); 
		return true; 
	} else if (elm.attachEvent) { 
		var r = elm.attachEvent('on' + evType, fn); 
		return r; 
	} else {
		elm['on' + evType] = fn;
	}
}

function findTarget(e) {
	// cross-browser function to find the event target
	var target;
	if (window.event && window.event.srcElement) {
		// IE does it differently... stores the event in a window.event object
		target = window.event.srcElement;
	}
	if (e && e.target) {
		target = e.target;
	}
	return target;
}

function changeSelect(selectID, paramName) {
	if (document.getElementById(selectID)) {
		var paramValue = document.getElementById(selectID).value;
		document.location.href = '?' + paramName + '=' + paramValue;
	}
}

function getElementsByClass(searchClass,node,tag) {
	var classElements = new Array();
	if ( node == null )
		node = document;
	if ( tag == null )
		tag = '*';
	var els = node.getElementsByTagName(tag);
	var elsLen = els.length;
	var pattern = new RegExp("(^|\\s)"+searchClass+"(\\s|$)");
	for (i = 0, j = 0; i < elsLen; i++) {
		if ( pattern.test(els[i].className) ) {
			classElements[j] = els[i];
			j++;
		}
	}
	return classElements;
}

function cancelClick(e) {
	if (window.event){
		window.event.cancelBubble = true;
		window.event.returnValue = false;
		return;
	}
	if (e){
		e.stopPropagation();
		e.preventDefault();
	}
}