function on(n){  
eval("document.all.text"+n+".style.display='block';");  
eval("document.all.ontext"+n+".style.display='none';");  
eval("document.all.offtext"+n+".style.display='inline';");  
}  
function off(n){  
eval("document.all.text"+n+".style.display='none';");  
eval("document.all.ontext"+n+".style.display='inline';");  
eval("document.all.offtext"+n+".style.display='none';");  
}