if (window.attachEvent) {
	// IE
	window.attachEvent('onload', setEcard);

} else {
	// DOM
	window.addEventListener('load', setEcard, false);
}

function setEcard() 
{ 
	if (!document.getElementById('ecardpics'))return;
	Ecard = document.getElementById('ecardpics');
	Ecard.img = Ecard.getElementsByTagName('IMG');
	prv = document.getElementById('btn-prev');
	prv.a = prv.getElementsByTagName('A');
	nxt = document.getElementById('btn-next');
	nxt.a = nxt.getElementsByTagName('A');
	prv.a[0].onclick = btnEvent;
	nxt.a[0].onclick = btnEvent;
	inputImg = document.getElementById('sendpic');
	cur = 0;
	inputImg.value = Ecard.img[cur].getAttribute('src');
	for (var i=0; i<Ecard.img.length; i++) {
		Ecard.img[i].style.display = (i==0) ? 'block' : 'none';
		
	}
}
function btnEvent(event) 
{
	event = event ? event : window.event;
	var target = event.srcElement ? event.srcElement : event.target;
	while (target.nodeName.toLowerCase() != 'a' && target.parentNode != null) {target = target.parentNode};
	this_btn = target.parentNode.getAttribute('id');
	if (this_btn == 'btn-next') {
		if ((cur+1)!=Ecard.img.length) {
			Ecard.img[cur+1].style.display = 'block';
			Ecard.img[cur].style.display = 'none';
			cur++;
			inputImg.value = Ecard.img[cur].getAttribute('src');
		}
	}
	if (this_btn == 'btn-prev') {
		if (cur!=0) {
			Ecard.img[cur-1].style.display = 'block';
			Ecard.img[cur].style.display = 'none';
			cur--;
			inputImg.value = Ecard.img[cur].getAttribute('src');
		}
	}	
	// DOM
	if (event.cancelable)
		event.preventDefault();
	// IE
	return false;
}