$("img.op0").one('load',function(){$(this).addClass('op1')}).each(function(){if(this.complete)$(this).load()});function vscroll(selector){e=$(selector);$("html, body").animate({scrollTop:$(e).offset().top},1000)}
function get_hash(param){return param.split("#")[1]}
function col(selector,cols){e=$(selector);$(e).filter(function(index){return!(index%cols)}).addClass('first')}
let scrollpos=window.scrollY
const header=document.getElementById("logo-y-menu")
const header_height=header.offsetHeight
const add_class_on_scroll=()=>header.classList.add("fixed")
const remove_class_on_scroll=()=>header.classList.remove("fixed")
window.addEventListener('scroll',function(){scrollpos=window.scrollY;if(scrollpos>=45){add_class_on_scroll()}
else{remove_class_on_scroll()}})