function ShowPopup(id){
	var GreyBG = jQuery('#greybg');
	var Popup = jQuery('#'+id+'_popup');
	Popup.css('left',((jQuery(window).width()/2)-(Popup.width()/2)));
	Popup.css('top',((jQuery(window).height()/2)+(jQuery(window).scrollTop())-(Popup.height()/2)));
	GreyBG.css('height',document.height);
	GreyBG.css('opacity',0.75).css('z-index',998).fadeIn('fast');
	Popup.css('z-index',999).fadeIn('fast');
}
function ClosePopup(id){
	var GreyBG = jQuery('#greybg');
	var Popup = jQuery('#'+id+'_popup');
	GreyBG.fadeOut('fast');
	Popup.fadeOut('fast');
}