/*****************************
From how to create a stunning and smooth popup using jquery
URL:  http://yensdesign.com/2008/09/how-to-create-a-stunning-and-smooth-popup-using-jquery/
accessed on 2/28/2009
*************************/
//SETTING UP OUR POPUP  
//0 means disabled; 1 means enabled;  
var popupStatus = 0;  
  
//loading popup with jQuery magic!
function loadPopup(){
//loads popup only if it is disabled
if(popupStatus==0){
$("#backgroundPopup").css({
"opacity": "0.7"
});
$("#backgroundPopup").fadeIn("slow");
$("#popuptips").fadeIn("slow");
popupStatus = 1;
}
}

//disabling popup with jQuery magic!
function disablePopup(){
//disables popup only if it is enabled
if(popupStatus==1){
$("#backgroundPopup").fadeOut("slow");
$("#popuptips").fadeOut("slow");
popupStatus = 0;
}
}

//centering popup
function centerPopup(){
//request data for centering
var windowWidth = document.documentElement.clientWidth;
var windowHeight = document.documentElement.clientHeight;
var popupHeight = $("#popuptips").height();
var popupWidth = $("#popuptips").width();
//centering
$("#popuptips").css({
"position": "absolute",
"top": windowHeight/2-popupHeight/2,
"left": windowWidth/2-popupWidth/2
});
//only need force for IE6

$("#backgroundPopup").css({
"height": windowHeight
});

}

$(document).ready(function(){
//LOADING POPUP
//Click the button event!
$("#popupbutton").click(function(){
//centering with css
centerPopup();
//load popup
loadPopup();
});

//CLOSING POPUP
//Click the x event!
$("#popuptipsClose").click(function(){
disablePopup();
});
//Click out event!
$("#backgroundPopup").click(function(){
disablePopup();
});
//Press Escape event!
$(document).keypress(function(e){
if(e.keyCode==27 && popupStatus==1){
disablePopup();
}
});

})