var button1n = new Image()
button1n.src = "./images/but-about-on.gif"
var button1a = new Image()
button1a.src = "./images/but-about-off.gif"
var button2n = new Image()
button2n.src = "./images/but-can-on.gif"
var button2a = new Image()
button2a.src = "./images/but-can-off.gif"
var button3n = new Image()
button3n.src = "./images/but-emp-on.gif"
var button3a = new Image()
button3a.src = "./images/but-emp-off.gif"
var button4n = new Image()
button4n.src = "./images/but-emop-on.gif"
var button4a = new Image()
button4a.src = "./images/but-emop-off.gif"
var button5n = new Image()
button5n.src = "./images/but-links-on.gif"
var button5a = new Image()
button5a.src = "./images/but-links-off.gif"	
var button6n = new Image()
button6n.src = "./images/but-home-on.gif"
var button6a = new Image()
button6a.src = "./images/but-home-off.gif"	
var button7n = new Image()
button7n.src = "./images/but-prof-on.gif"
var button7a = new Image()
button7a.src = "./images/but-prof-off.gif"
var button8n = new Image()
button8n.src = "./images/but-req-on.gif"
var button8a = new Image()
button8a.src = "./images/but-req-off.gif"
var button9n = new Image()
button9n.src = "./images/but-mem-on.gif"
var button9a = new Image()
button9a.src = "./images/but-mem-off.gif"
var button10n = new Image()
button10n.src = "./images/but-con-on.gif"
var button10a = new Image()
button10a.src = "./images/but-con-off.gif"
var button11n = new Image()
button11n.src = "./images/but-home-on.gif"
var button11a = new Image()
button11a.src = "./images/but-home-off.gif"	
var button12n = new Image()
button12n.src = "./images/but-app-on.gif"
var button12a = new Image()
button12a.src = "./images/but-app-off.gif"	
var button13n = new Image()
button13n.src = "./images/but-sub-on.gif"
var button13a = new Image()
button13a.src = "./images/but-sub-off.gif"	
var button14n = new Image()
button14n.src = "./images/but-int-on.gif"
var button14a = new Image()
button14a.src = "./images/but-int-off.gif"								 							 							 								 							 							 							 								 

function act(imgName) {
document[imgName].src = eval(imgName + 'n.src')
}
function inact(imgName) {
document[imgName].src = eval(imgName + 'a.src')
}