// shop_functions

function clickimg(i_id){
	var o_obj = document.getElementById('detailimg');
	if(!o_obj) return;

	if(!a_img[i_id]) return;
	o_obj.src = a_img[i_id][0];
	o_obj.width = a_img[i_id][1];
	o_obj.height = a_img[i_id][2];
}

function number_format(a, b, c, d){
	a = Math.round(a * Math.pow(10, b)) / Math.pow(10, b);
	e = a + '';
	f = e.split('.');

	if (!f[0]) {
		f[0] = '0';
	}

	if (!f[1]) {
		f[1] = '';
	}

	if (f[1].length < b){
		g = f[1];
		for (i=f[1].length + 1; i <= b; i++){
			g += '0';
		}
		f[1] = g;
	}

	if(d != '' && f[0].length > 3){
		h = f[0];
		f[0] = '';
		for(j = 3; j < h.length; j+=3){
			i = h.slice(h.length - j, h.length - j + 3);
			f[0] = d + i +  f[0] + '';
		}

		j = h.substr(0, (h.length % 3 == 0) ? 3 : (h.length % 3));
		f[0] = j + f[0];
	}
	c = (b <= 0) ? '' : c;
	return f[0] + c + f[1];
}