function showPopup(index) {
	
	switch (index) {
		case "city":
			popup = $('#popCity');
			break;
		}
	
	blind = $('<div class="blind"></div>');
	pageHeight = $('#wrapper').height();/*(document.documentElement.offsetHeight > document.body.clientHeight) ? document.documentElement.offsetHeight : document.body.clientHeight;*/
	blind.height(pageHeight).click(function(){
		closePopup(popup,blind);
		return false;
	}).appendTo('#wrapper');
		
	setCenter(popup);
	blind.show();
	popup.show();

	popup.find('.popClose').click(function(){
	closePopup(popup,blind);
	return false;
	});
	return false;
}
	
function setCenter(item) {
	windowHeight = document.documentElement.clientHeight;
	currentOffset = document.documentElement.scrollTop || document.body.scrollTop;
	
	currentOffset = currentOffset + parseInt((windowHeight - $(item).height()) / 2);
	pLeft = (document.body.clientWidth - $(item).width()) / 2;

	if (currentOffset < 20) { $(item).css({top: 20, left: pLeft}).fadeIn(); }
	else { $(item).css({top: currentOffset, left: pLeft}).fadeIn(); }
	
	return false;
}
function closePopup(popup,blind){
	popup.hide();
	blind.remove();
}