function popup_open(popuplink, windowname, width, height, scrollbars)
{

	if (!window.focus)
		return true;
	
	var href;
	
	if (typeof(popuplink) == 'string')
		href=popuplink;
	else
		href=popuplink.href;
	
	var left = (screen.width-width)/2;
	var top = (screen.height-height)/2;
	
	newwindow = window.open(href,windowname,"left="+left+",top="+top+",screenX="+left+",screenY="+top+",width="+width+",height="+height+",scrollbars="+scrollbars+",resizable=no");
	
	if (window.focus)
		newwindow.focus()
	
	return false;

}

function popup_submit(formref, windowname, width, height)
{
	
	if (!window.focus)
		return true;
	
	var href;
	
	var left = (screen.width-width)/2;
	var top = (screen.height-height)/2;
	
	newwindow = window.open('about:blank',windowname,"left="+left+",top="+top+",screenX="+left+",screenY="+top+",width="+width+",height="+height+",scrollbars=no,resizable=yes"); 
	
	formref.submit();
	
	if (window.focus)
		newwindow.focus()
	
	return false;

}

function refreshPage()
{ 
	document.location.reload(); 
}