function replaceSearchParam(href,param,value){
	var url=new URL(href);
	var search_params=url.searchParams;
	search_params.set(param,value);
	url.search=search_params.toString();
	var new_url=url.toString();
	return new_url;
}
$('.catalog .item .time input').on('change',function(){
	var id=$(this).closest('.values').find('input:checked').val();
	var buy_link=$(this).closest('.item').find('.buy a')
	buy_link.attr('href',replaceSearchParam(buy_link.attr('href'),'m',id));
});

function current_time(){
	let bangkok_datetime_str=new Date().toLocaleString("en-US",{timeZone:"Asia/Bangkok"});
	var date=new Date(bangkok_datetime_str);
	var hours=date.getHours();
	var minutes=date.getMinutes();
	var seconds=date.getSeconds();
	if(hours<10)hours="0"+hours;
	if(minutes<10)minutes="0"+minutes;
	if(seconds<10)seconds="0"+seconds;
	document.getElementById('current_time').innerHTML='<span class="number">'+hours+'</span><span class="dot">:</span><span class="number">'+minutes+'</span><span class="dot">:</span><span class="number">'+seconds+'</span>';
}
$(document).ready(function(){
	setInterval(current_time,1000);
});