function getElementsClass(classnames){
	var classobj= new Array();
	var classint=0;
	var tags=document.getElementsByTagName("span");
	for(var i in tags){
		if(tags[i].nodeType==1){
			if(tags[i].getAttribute("class") == classnames)
			{ 
				classobj[classint]=tags[i];
				classint++;
			}
		}
	}
	return classobj;
}
var a = getElementsClass("icons1");
//document.getElementById("navigation").innerHTML = "Views：12";
a[0].innerHTML = "Views：16896";