var opacityMax = 70;
var opacityStart = 0;
var formCode = "";

$(document).ready(function() { 
$("div.pageUtilBox>a.email").click(function() { 
grayOut(true); 
}); 
});  


function grayOut(vis) {
var tempLinkHeight = findGlobalPosY(getElmtRef("emailPageLink")) - $("#emailPage").height();
var tempLinkLeft = findGlobalPosX(getElmtRef("emailPageLink"));
//alert(findGlobalPosY(getElmtRef("emailPageLink")));
//alert($("mainNavContainer").css(offset()));
  // Pass true to gray out screen, false to ungray
  // options are optional.  This is a JSON object with the following (optional) properties
  // opacity:0-100         // Lower number = less grayout higher = more of a blackout 
  // zindex: #             // HTML elements with a higher zindex appear on top of the gray out
  // bgcolor: (#xxxxxx)    // Standard RGB Hex color code
  // grayOut(true, {'zindex':'50', 'bgcolor':'#0000FF', 'opacity':'70'});
  // Because options is JSON opacity/zindex/bgcolor are all optional and can appear
  // in any order.  Pass only the properties you need to set.
  var options = options || {}; 
  var zindex = options.zindex || 1000;
  var opacity = options.opacity || 70;
  var opaque = (opacity / 100);
  var bgcolor = options.bgcolor || '#000000';
  var dark=document.getElementById('darkenScreenObject');
  if (!dark) {
// The dark layer doesn't exist, it's never been created.  So we'll
// create it here and apply some basic styles.
// If you are getting errors in IE see: http://support.microsoft.com/default.aspx/kb/927917
var tbody = document.getElementsByTagName("body")[0];
var tnode = document.createElement('div');           // Create the layer.
tnode.style.position='absolute';                 // Position absolutely
tnode.style.top='0px';                           // In the top
tnode.style.left='0px';                          // Left corner of the page
tnode.style.overflow='hidden';                   // Try to avoid making scroll bars            
tnode.style.display='none';                      // Start out Hidden
tnode.id='darkenScreenObject';                   // Name it so we can find it later
tbody.appendChild(tnode);                            // Add it to the web page
dark=document.getElementById('darkenScreenObject');  // Get the object.
//dark.onclick = function(){grayOut(false);};
  }
  if (vis) {
// Calculate the page width and height 
if( document.body && ( document.body.scrollWidth || document.body.scrollHeight ) ) {
var pageWidth = document.body.scrollWidth+'px';
var pageHeight = document.body.scrollHeight+'px';
} else if( document.body.offsetWidth ) {
  var pageWidth = document.body.offsetWidth+'px';
  var pageHeight = document.body.offsetHeight+'px';
} else {
   var pageWidth='100%';
   var pageHeight='100%';
}   
//set the shader to cover the entire page and make it visible.

dark.style.zIndex=zindex;        
dark.style.backgroundColor=bgcolor;  
dark.style.width= pageWidth;
dark.style.height= pageHeight;
dark.style.display='block';  
fadeIn(tempLinkHeight,tempLinkLeft);                         
  } else {  
hideEmailPageForm(); 
fadeOut(); 
  }
} 
function fadeIn(tempLinkHeight,tempLinkLeft){ 
dark=document.getElementById('darkenScreenObject'); 
dark.style.opacity=opacityStart/100;                      
dark.style.MozOpacity=opacityStart/100;                   
dark.style.filter='alpha(opacity='+opacityStart+')';
opacityStart = opacityStart + 5;
if (opacityStart <= opacityMax){
setTimeout ("fadeIn("+tempLinkHeight+","+tempLinkLeft+");", 1);
}else{
opacityStart = 0; 
showEmailPageForm(tempLinkHeight,tempLinkLeft); 
}
}
function fadeOut(){ 
dark=document.getElementById('darkenScreenObject'); 
dark.style.opacity=opacityMax/100; 
dark.style.MozOpacity=opacityMax/100; 
dark.style.filter='alpha(opacity='+opacityMax+')';
opacityMax = opacityMax - 5;
if (opacityMax >= opacityStart){
setTimeout ("fadeOut();", 1);
}else{
opacityMax = 70;
dark.style.display='none'; 
}
} 
function showEmailPageForm(tempLinkHeight,tempLinkLeft){
if(formCode === ""){
formCode = $("#daBod").html();
} 
$("#emailPage").show(); 
$("#emailPage").css("top",tempLinkHeight);
$("#emailPage").css("left",tempLinkLeft); 

}
function hideEmailPageForm(){ 
$("#daBod").html(formCode); 
$("#emailPage").hide(); 
}
pageLocation = "";
pageLocation = pageLocation + document.location;
pageDomain = document.domain;
pageLocation = pageLocation.split(pageDomain);
pageLocation = pageLocation[1].split("#");
if(location.search){
pageLocation = pageLocation[0].split(location.search);
}
function emailPage(){
var recip = $("#recip").val(); 
var sender = $("#sender").val(); 
if (!isEmail(recip)){
alert('Please enter a valid email address.');
$("#recip").focus()
return false;
}
if (!isEmail(sender)){
alert('Please enter a valid email address.');
$("#sender").focus()
return false;
}
var comment = $("#comment").val(); 
$("#daBod").html("Sending...<br/><br/>");
var pars = "comment=" + comment + "&recip=" + recip + "&sender=" + sender + "&page=" + pageLocation[0];
//alert(pars);
$.ajax({
type: "GET",
url: "/email_page/email_page.asp",
data: pars,
async: true,
success: function(msg){
$("#daBod").html(msg);
}
});
};
function isEmail(input) {
return /^[a-zA-Z0-9']{1}([\._a-zA-Z0-9-']+)(\.[_a-zA-Z0-9-']+)*@[a-z0-9-]+(\.[a-z0-9-]+){1,3}$/.test(input);
}
function findGlobalPosX(obj) {
var curleft = 0;
if (obj.offsetParent) {
while (obj.offsetParent) {
curleft += obj.offsetLeft;
obj = obj.offsetParent;
}
} else if (obj.x) {
curleft += obj.x;
}
return curleft;
}
function findGlobalPosY(obj) {
var curtop = 0;
if (obj.offsetParent) {
while (obj.offsetParent) {
curtop += obj.offsetTop;
obj = obj.offsetParent;
}
curtop += 1;
} else if (obj.y) {
curtop += obj.y;
}
return curtop;
}
function getElmtRef(strElmtId) {
if (!document.getElementById) {
return document.all[strElmtId];
} else {
return document.getElementById(strElmtId);
}
}