var state = { 'page_id': 1, 'user_id': 5 };
var title = 'Hello World';
var url = 'hello-world.html';

history.pushState(state, title, url);

var container = '';
sub.addEventListener('mouseover', function (e) {
	for (i = 0; i < chat.length; i++) {
  
  	var text = (function(i){
  	
    		var container;
    
        chat[i].addEventListener('contextmenu', function (e) {
            e.preventDefault();
            container = this.innerText + ' ';
            this.style.background = 'lime';
        });
        
        return container;
		})(i);
    
    container += text;

   }
}