var window_handle;
var window_page; 

function popup(page) {
windowname='popup';
windowproperties='height=400,width=600,scrollbars,resizable';
    window_handle = window.open(page,windowname,windowproperties);
    window_handle.focus();
    return false;
}


/*
function open_main(page) {
    if (opener && !opener.closed) opener.location.href = page;
    else {
        window.open('frame.htm');
        window_page = page;
        setTimeout('reopen_opener()',100);
    }
    return false;
}

function reopen_opener() {
    opener = window.open(window_page,'main');
    opener.window_handle = self;
    opener.window_handle.closed = false;
}

if (window.opener) {
	if (!(window.opener.closed)) {
		document.write("\<a href=\"#\" onclick=\"if(!(window.opener.closed)){
		window.opener.focus();
	}
 	else {
		alert(\'The window you were originally browsing in has closed.\\n Please, open a new window to continue shopping.\');}\"\>\<img src=\"\/images\/cont_shopping.gif\" border=0 align=top alt=\"\continue shopping\"\\>\<\/a\>\&nbsp;\&nbsp;");
	}
}
*/