function activ(key){
var e = document.getElementById("button"+key);
e.className='buttonactiv'  
var l = document.getElementById("link"+key);  
//e.style.background="#7c92a4"
 l.style.color="#fff"
l.style.textDecorationNone;   
} 

function noactiv(key){
 
var e = document.getElementById("button"+key);
e.className='button' 
l = document.getElementById("link"+key);     
// e.style.background="#e2e8ed"
l.style.color="#000"
l.style.textDecorationUnderline 
 
}  

function linktake(key){
 var e = document.getElementById("link"+key);
window.location=e.href 
 
}