window.onload = function () {
	document.documentElement.id = 'js';
}

function getHeight() {
	var h = document.getElementById('page');
	return h.offsetHeight;
}

function screnOffsetY() {
	var y = 0;
	y = (window.scrollY) ? window.scrollY : document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop;
	return y;
}

function popup(state) {
	if (!popup) var popup = document.getElementById('popupId');
	if (!blackness) var blackness = document.getElementById('blackness');
	blackness.style.height = getHeight()+'px';
	if (state=='show') {
		popup.style.display = 'block';
		popup.style.top = document.documentElement.clientHeight / 2 - popup.clientHeight / 2 + screnOffsetY() + 'px';
		blackness.style.display = 'block';
	} else if (state=='hide') {
		blackness.style.display = 'none';
		popup.style.display = 'none';
	}
}

var q = 1;
function addFile(e) {
	if (q<5) {
		var td = e.parentNode;
		var attach = document.createElement('div');
		attach.className = 'w-file';
		attach.innerHTML = '<input type="file" id="addphoto_photos1" class="file" name="foto[]" />';
		td.insertBefore(attach, e);
		q++;
	}
}

function getElementsByClass(searchClass, tag) {
	var classElements = new Array();
	if (!tag) tag = '*';
	var els = document.getElementsByTagName(tag);
	var elsLen = els.length;
	var pattern = new RegExp('(^|\\\\s)'+searchClass+'(\\\\s|$)');
	for (i = 0, j = 0; i < elsLen; i++) {
		if (pattern.test(els[i].className)) {
			classElements[j] = els[i];
			j++;
		}
	}
	return classElements;
}