var LastButtonNumber;
var ButtonOn;
//ButtonOn='01';

function chGraphic(imgModule,imgObject){ 
		document.images[imgModule].src = eval(imgObject + ".src"); 
				       } 

function ButtonOver(ButtonNumber) {
		var ButtonName;
		var ButtonGraphic;
		ButtonName='button'+ButtonNumber;
		ButtonGraphic='button'+ButtonNumber+'_over'
		if (ButtonNumber!=ButtonOn) 
			{
			chGraphic(ButtonName,ButtonGraphic);
			}
				  }

function ButtonOut(ButtonNumber) {
		var ButtonName;
		var ButtonGraphic;
		ButtonName='button'+ButtonNumber;
		ButtonGraphic='button'+ButtonNumber+'_up'
		if (ButtonNumber!=ButtonOn) 
			{
			chGraphic(ButtonName,ButtonGraphic);
			}
				  }

function ButtonDown(ButtonNumber) {
		var ButtonName;
		var ButtonGraphic;
		var ButtonOnGraphic;
		var ButtonOnName;
		var TitleURL;
		var BodyURL;
		ButtonName='button'+ButtonNumber;
		ButtonGraphic='button'+ButtonNumber+'_down'
		LastButtonOnName='button'+ButtonOn;
		LastButtonOnGraphic='button'+ButtonOn+'_up'
		chGraphic(ButtonName,ButtonGraphic);
		if ((ButtonOn=='01' | ButtonOn=='02' | ButtonOn=='03' | ButtonOn=='04' | ButtonOn=='05' | ButtonOn=='06') & (ButtonNumber!=ButtonOn))
			{
			chGraphic(LastButtonOnName,LastButtonOnGraphic);
			}
		ButtonOn=ButtonNumber;
				  }
				  
function ButtonClear() {
		chGraphic('button01','button01_up');
		chGraphic('button02','button02_up');
		chGraphic('button03','button03_up');
		chGraphic('button04','button04_up');
		chGraphic('button05','button05_up');
		chGraphic('button06','button06_up');
		ButtonOn='';
		}

button01_up = new Image(128,28); 
button01_up.src = "images/b01u.gif";
button01_over = new Image(128,28); 
button01_over.src ="images/b01o.gif";
button01_down = new Image(128,28); 
button01_down.src ="images/b01d.gif";
button02_up = new Image(128,28); 
button02_up.src = "images/b02u.gif";
button02_over = new Image(128,28); 
button02_over.src = "images/b02o.gif";
button02_down = new Image(128,28); 
button02_down.src = "images/b02d.gif";
button03_up = new Image(128,28); 
button03_up.src = "images/b03u.gif";
button03_over = new Image(128,28); 
button03_over.src ="images/b03o.gif";
button03_down = new Image(128,28); 
button03_down.src = "images/b03d.gif";
button04_up = new Image(128,28); 
button04_up.src = "images/b04u.gif";
button04_over = new Image(128,28); 
button04_over.src = "images/b04o.gif";
button04_down = new Image(128,28); 
button04_down.src = "images/b04d.gif";
button05_up = new Image(128,28); 
button05_up.src = "images/b05u.gif";
button05_over = new Image(128,28); 
button05_over.src = "images/b05o.gif";
button05_down = new Image(128,28); 
button05_down.src = "images/b05d.gif";
button06_up = new Image(128,28); 
button06_up.src = "images/b06u.gif";
button06_over = new Image(128,28); 
button06_over.src = "images/b06o.gif";
button06_down = new Image(128,28); 
button06_down.src = "images/b06d.gif";