function openPopUp(url,event,width,height,move,centre,options) {
	var win=top.gPopUpWindow;
	if(width==null)
		width = 500;
	if(height==null)
		height = 500;
	if (!win || win.closed) {
		if (!options) {
			options="menubar,location,resizable,scrollbars,toolbar=1";
		}
		win=window.open(url,"","width=" + width + ",height=" + height + ","+options);
		top.gPopUpWindow=win;
		var y=(event!=null)?event.screenY:9999;
		if (move!=false)
			if(centre){
				win.moveTo(win,(screen.availWidth-width)/2,(screen.availHeight-height)/2)
			}else{
				win.moveTo(win,screen.availWidth-width-20,20);
			}
	} else {
		if (win.closed) win.open();
		win.location.replace(url);
		win.focus();
	}
	return false;
}