function winCenter(pageURL, pageName, popWidth, popHeight) 
{
	var posLeft	= (screen.width - popWidth) / 2;
	var posUp	= (screen.height - popHeight) / 2;

	//location,status,scrollbars,
	winProp	= 'width='+popWidth+',height='+popHeight+',left='+posLeft+',top='+posUp;

	Win = window.open(pageURL, pageName, winProp);
	if (parseInt(navigator.appVersion) >= 4) { Win.window.focus(); }
} 

function winShow(pageURL, pageName, posLeft, posUp) 
{
	winProp	= 'width=20,height=20,left='+posLeft+',top='+posUp;

	Win = window.open(pageURL, pageName, winProp);
	if (parseInt(navigator.appVersion) >= 4) { Win.window.focus(); }
}