//Roll-over code		
Browser = false ;
if(document.images)
	{ Browser = true;
	
	// main left hand navigation
	
	a1 = new Image(); a1.src = "images/bt_home_1.gif";
	a2 = new Image(); a2.src = "images/bt_home_2.gif";
	
	b1 = new Image(); b1.src = "images/bt_series_1.gif";
	b2 = new Image(); b2.src = "images/bt_series_2.gif";
	
	c1 = new Image(); c1.src = "images/bt_test_1.gif";
	c2 = new Image(); c2.src = "images/bt_test_2.gif";
	
	d1 = new Image(); d1.src = "images/bt_yandt_1.gif";
	d2 = new Image(); d2.src = "images/bt_yandt_2.gif";
	
	e1 = new Image(); e1.src = "images/bt_criticisng_1.gif";
	e2 = new Image(); e2.src = "images/bt_criticisng_2.gif";
	
	f1 = new Image(); f1.src = "images/bt_schoolreport_1.gif";
	f2 = new Image(); f2.src = "images/bt_schoolreport_2.gif";
	
	g1 = new Image(); g1.src = "images/bt_whatlike_1.gif";
	g2 = new Image(); g2.src = "images/bt_whatlike_2.gif";
	
	h1 = new Image(); h1.src = "images/bt_blackboard_1.gif";
	h2 = new Image(); h2.src = "images/bt_blackboard_2.gif";
	
	i1 = new Image(); i1.src = "images/bt_more_1.gif";
	i2 = new Image(); i2.src = "images/bt_more_2.gif";
		
	}
	
function gbb(place, imgName) {
if (Browser == true) {
document[place].src =eval(imgName + ".src");
} }


var sUserAgent = navigator.userAgent.toLowerCase();
var isIE = document.all?true:false;
var isNS4 = document.layers?true:false;
var isOp = (sUserAgent.indexOf('opera')!=-1)?true:false;

var isMoz = (sUserAgent.indexOf('mozilla/5')!=-1 && sUserAgent.indexOf('opera')==-1 && sUserAgent.indexOf('msie')==-1)?true:false;

function pop(oAnchor,sWindow,sProps){
	var sUrl = '';
	if(oAnchor.getAttribute) sUrl = oAnchor.getAttribute('href');
	if(sUrl=='' && isIE) sUrl = window.event.srcElement.getAttribute('href');
	if(sUrl=='') sUrl = oAnchor.href;
	var sWindowName = sWindow?sWindow:'_blank';
	if(!sProps) sProps = 'width=600,height=500,scrollbars,resizable,toolbar,status,menubar,location';
	if(sUrl) var oPopup = window.open(sUrl,sWindowName,sProps);
	// An Opera bug returns too early if you focus the window, so we don't focus it in that browser.
	// Only a noticable defect (in that browser) if a window is already open and hidden behind another window.
	if(oPopup && !isOp) oPopup.focus();
	// If popup was created successfully, cancel link in calling window.
	// Acts as regular link in browser that has popup blocking enabled.
	return (oPopup)?false:true;
}

//-->