function popup(obj, options) {
	if(typeof options == 'undefined')
		var options = new Object;
	if(!options.width)
		options.width = '400';
	if(!options.height)
		options.height = '300';
	if(!options.href)
		options.href = obj.href;
	(window.open('','_blank',"toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=0,width="+options.width+",height="+options.height)).location.href = options.href;;
	return false;
}

function showBlock(id) {
    var block = document.getElementById("sub_" + id);
    var img = document.getElementById("img_" + id);
    var anc = document.getElementById("a_" + id);
	block.style.display = "block";
    img.src = "/imgs/design/minus.gif";
    anc.href = "javascript:hideBlock("+id+")"
}

function hideBlock(id) {
    var block = document.getElementById("sub_" + id);
    var img = document.getElementById("img_" + id);
    var anc = document.getElementById("a_" + id);
    block.style.display = "none";
    img.src = "/imgs/design/plus.gif";
    anc.href = "javascript:showBlock("+id+")"
}