function openWin(where, width, height, name, resizable, scrollbars){
	var name = (typeof name == 'undefined') ? ('popup') : (name);
	var posx = screen.width / 2 - width / 2;
	var posy = screen.height / 2 - height / 2;
	var propsZ = (document.all) ? ('top=' + posy + ',left=' + posx) : ('screenX=' + posx + ',screenY=' + posy);
	props = 'width=' + width + ',height=' + height + ',resizable=' + resizable + ',scrollbars=' + scrollbars + ',' + propsZ;

	newWin = window.open('', name, props);
    newWin.location.href = where;
}

function openPopup(where, name) {
	openWin(where, 600, 470, name);
}