function addAccordionTabs(){

var acc = document.getElementsByClassName("accordion");
var i;
for (i = 0; i < acc.length; i++) {
  acc[i].onclick = function() {
    this.classList.toggle("active");
    var panel = this.nextElementSibling;
    if (panel.style.maxHeight){
  	  panel.style.maxHeight = null;
    } else {
  	  panel.style.maxHeight = panel.scrollHeight + "px";
    } 
  }
}

};