myNewPage = null;

function openPopup(url,src,w,h) {
	//image path
	imgPath = src;

	/*
	//image size
	popImg = new Image();
	popImg.src = src;
	
	//get image size
	h = popImg.height + 20;
	w = popImg.width + 4;
	*/

	//align center
	w += 4;
	h += 20;
	l = (screen.width - w)/2;
	t = (screen.height - h)/2;

	var str_property; 
	str_property = 'toolbar=no,scrollbars=no,resizable=no,width=' + w +',height=' + h +',left=' + l +',top=' + t;

	//open popup
	if (myNewPage != null) {
		myNewPage.close();
	}
	myNewPage = window.open(url,'popup',str_property);
	myNewPage.focus(); 
}