// New portfolio page JS, including SleekTabs setup code




var sleektabs_box;

var sleektabs_ajaxObject = false;
		
var sleektabs_cache = [];

var sleektabs_useCache = true;
	
function sleektabs_initialiseAjax() {
		
	if (window.XMLHttpRequest) {
		sleektabs_ajaxObject = new XMLHttpRequest();
	
		if (sleektabs_ajaxObject.overrideMimeType) {
			sleektabs_ajaxObject.overrideMimeType('text/xml');
		}
	
	} else if (window.ActiveXObject) {
		try {
			sleektabs_ajaxObject = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				sleektabs_ajaxObject = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {}
		}
	}
	
	if (!sleektabs_ajaxObject) {
		return false;
	}
	else {
		return true;
	}


} // end function

function sleektabs_tabSwitch(boxElement, urlToLoad, thisTab, otherTabs) {

	if (!sleektabs_initialiseAjax()) {
		
		return true;
	}
		
	sleektabs_box = boxElement;
	
	
	for (var i = 0; i < otherTabs.length; i++) {
	
	
		document.getElementById(otherTabs[i]).className = 'sleektabs-normal';
		
	}
		
	document.getElementById(thisTab).className = 'sleektabs-selected';
	
	if (!sleektabs_useCache || !sleektabs_cache[thisTab]) {
		
		document.getElementById(sleektabs_box).innerHTML = '<div id="spinner"><img src="http://media.upfold.org.uk/pwdb40/images/spinner.gif" width="32" height="32" alt="Loading animation" /></div>';
		sleektabs_ajaxObject.onreadystatechange = function() {sleektabs_tabSwitch_response(thisTab);};
		var newDate = new Date();
		var queryMatch = new RegExp("\\?");
		sleektabs_ajaxObject.open('GET', urlToLoad + (queryMatch.exec(urlToLoad) ? "&" : "?") + "__st_ts=" + newDate.getTime(), true);
	
		sleektabs_ajaxObject.send(null);
		return false;
			
	}
			
	else {
		
		document.getElementById(sleektabs_box).innerHTML = sleektabs_cache[thisTab];
		return false;
		
	}
		
}			

function sleektabs_tabSwitch_response(thisTab) {

	
	if (sleektabs_ajaxObject.readyState == 4) {
		
		if (sleektabs_ajaxObject.status == 200) {
		
			document.getElementById(sleektabs_box).innerHTML = sleektabs_ajaxObject.responseText;
	
			if (sleektabs_useCache) {
				sleektabs_cache[thisTab] = sleektabs_ajaxObject.responseText;
			}
			box = false;
		
		}
		
		else {
		
			alert('Loading the tab failed. Error code ' + sleektabs_ajaxObject.status);
			return false;
		
		}
	
	}	

}