// check that the script file is being referenced
//window.alert('script file is being referenced');
function turnAllOff ()
{
	document.getElementById('pic0').src='images/pic0_up.jpg';
	document.getElementById('pic1').src='images/pic1_up.jpg';
	document.getElementById('pic2').src='images/pic2_up.jpg';
	document.getElementById('pic3').src='images/pic3_up.jpg';
	document.getElementById('pic4').src='images/pic4_up.jpg';
	document.getElementById('pic5').src='images/pic5_up.jpg';
	document.getElementById('pic6').src='images/pic6_up.jpg';
	document.getElementById('pic7').src='images/pic7_up.jpg';
		
}
function goToFunction(gotoAddress)
{
	turnAllOff();
	//window.alert(gotoAddress);
	document.getElementById('contentFrame').src=gotoAddress;
	//window.alert('end of goToFunction');
}


function lightup(imgName) 
{
//	turnoff('pic0');
//	turnoff('pic1');
//	turnoff('pic2');
//	turnoff('pic3');
//	turnoff('pic4');
//	turnoff('pic5');
//	turnoff('pic6');
	//window.alert('lightup function being called');
		if (currentPage != imgName)
		{
			var imgOn="images/"+imgName+"_over.jpg";
			document.getElementById(imgName).src=imgOn;
		}
  
 }

function turnoff(imgName) 
{
//	window.alert('current page is'+currentPage);
	if (currentPage != imgName)
	{
		var imgOff="images/"+imgName+"_up.jpg";
		document.getElementById(imgName).src=imgOff;
	}
}

function rollOver(btnName,source) 
{
	document.getElementById(btnName).src = source;
}

function initialise(picNumber)
{
	currentPage = picNumber;
	var imgOn="images/"+currentPage+"_over.jpg";
	document.getElementById(currentPage).src=imgOn;
	
	pic0on= new Image(200,40);
    pic0on.src="images/pic0_over.jpg";  
	pic1on= new Image(200,40);
    pic1on.src="images/pic1_over.jpg";  
	pic2on= new Image(200,40);
    pic2on.src="images/pic2_over.jpg";
	pic3on= new Image(200,40);
    pic3on.src="images/pic3_over.jpg";
	pic4on= new Image(200,40);
    pic4on.src="images/pic4_over.jpg";	
	pic5on= new Image(200,40);
    pic5on.src="images/pic5_over.jpg";	
	pic6on= new Image(200,40);
    pic6on.src="images/pic6_over.jpg";	
	pic7on= new Image(200,40);
    pic7on.src="images/pic7_over.jpg";		
	
    pic0off= new Image(200,40);
    pic0off.src="images/pic0_up.jpg";
	pic1off= new Image(200,40);
    pic1off.src="images/pic1_up.jpg";
	pic2off= new Image(200,40);
    pic2off.src="images/pic2_up.jpg";
	pic3off= new Image(200,40);
    pic3off.src="images/pic3_up.jpg";
	pic4off= new Image(200,40);
    pic4off.src="images/pic4_up.jpg";
	pic5off= new Image(200,40);
    pic5off.src="images/pic5_up.jpg";
	pic6off= new Image(200,40);
    pic6off.src="images/pic6_up.jpg";
	pic7off= new Image(200,40);
    pic7off.src="images/pic7_up.jpg";

}