jangkar html di halaman sama tanpa url
var functionforscroll = function(id){
var reqId = "#"+id;
window.scrollTo(0, $(reqId).offset().top-85);
}
Hungry Hamster
var functionforscroll = function(id){
var reqId = "#"+id;
window.scrollTo(0, $(reqId).offset().top-85);
}<a href="" class="smoothscroll" onclick="functionforscroll('tabs')">
<div class="scroll-down"></div></a>