function ShareArticle(share_url,xval,yval) { 
	darken_share_page();
	show_share_panel(share_url,xval,yval);
} 

	function show_share_panel(share_url,xval,yval){
		var share_panel = document.getElementById('share_panel');
		w = 600;
		h = 450;
		// get the x and y coordinates to center the notice panel
		xc = Math.round((document.body.clientWidth/2)-(w/2)-25);
		yc = (screen.height - 450)/4;
		// show the notice panel
		share_panel.style.left = xc + "px";
		share_panel.style.top  = yc + "px";
		share_panel.style.display = 'block';
		
		var xmlHttp=GetXmlHttpObject();
		if (xmlHttp==null){
		  alert ("Your browser does not support AJAX!");
		  return;
		} 
		var url="../../ajax/share_content_show.php";
		var params = "url="+share_url+"&x="+xval+"&y="+yval;
		xmlHttp.open("POST", url, true);
		
		xmlHttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
		xmlHttp.setRequestHeader("Content-length", params.length);
		xmlHttp.setRequestHeader("Connection", "close");
		
		xmlHttp.onreadystatechange = function() {
			if(xmlHttp.readyState == 4 && xmlHttp.status == 200) {
				var shareContent = document.getElementById('shareContent');
				shareContent.innerHTML = xmlHttp.responseText;
			}
		}
		xmlHttp.send(params);	
	}
	
	function darken_share_page(){
		var page_screen_share = document.getElementById('page_screen_share');
		var innerHeight = document.body.clientHeight;
		innerHeight = innerHeight + 1;
		page_screen_share.style.height = innerHeight + 'px';
		page_screen_share.style.display = 'block';
	}
	
	function lighten_share_page(){
		var page_screen_share = document.getElementById('page_screen_share');
		page_screen_share.style.display = 'none';
	}
	
	function close_share_panel(){
		var share_panel = document.getElementById('share_panel');
		share_panel.style.display = 'none';
		lighten_share_page();
		document.form_share.subject.value = "";
		var sent = document.getElementById('share_sent');
		sent.innerHTML = "";
	}
	
function shareContent(content){
	var tab = document.getElementById(content);
	if(content == 'email_friend_tab'){
		var met = document.getElementById('my_email_tab');
		met.innerHTML = "<a class='tab' onclick=\"shareContent('my_email_tab');\">My Email</a>";
		tab.innerHTML = "<a class='tabSelected' onclick=\"shareContent('email_friend_tab');\">Email a Friend</a>";	
		var container = document.getElementById('email_friend');
		var container01 = document.getElementById('my_email');
		container.style.display = '';
		container01.style.display = 'none';
	} else if(content == 'my_email_tab'){
		var eft = document.getElementById('email_friend_tab');
		eft.innerHTML = "<a class='tab' onclick=\"shareContent('email_friend_tab');\">Email a Friend</a>";	
		tab.innerHTML = "<a class='tabSelected' onclick=\"shareContent('my_email_tab');\">My Email</a>";	
		var container = document.getElementById('email_friend');
		var container01 = document.getElementById('my_email');
		container.style.display = 'none';
		container01.style.display = '';
	}
}

function share_email_friend(){
	var email = document.form_share.email.value;
	var subject = document.form_share.subject.value;
	var msg = document.form_share.msg.innerHTML;
	if(msg == ''){
		msg = document.form_share.msg.value;
	}
	var pass = document.form_share.pass_share.value;
	var human = document.form_share.human_share.value;
	var url_link = document.form_share.url_share.value;
	var desc = document.form_share.description_share.value;
	var title = document.form_share.title_share.value;
	
	if(pass == human){
		var xmlHttp=GetXmlHttpObject();
		if (xmlHttp==null){
		  alert ("Your browser does not support AJAX!");
		  return;
		} 
		var url="../../ajax/share_content_email.php";
		var params = "email="+email+"&subject="+subject+"&msg="+msg+"&url="+url_link+"&desc="+desc+"&title="+title;
		xmlHttp.open("POST", url, true);
		
		xmlHttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
		xmlHttp.setRequestHeader("Content-length", params.length);
		xmlHttp.setRequestHeader("Connection", "close");
		
		xmlHttp.onreadystatechange = function() {
			if(xmlHttp.readyState == 4 && xmlHttp.status == 200) {
				var response = xmlHttp.responseText;
				if(response == "1"){
					var status = document.getElementById('share_status');
					status.innerHTML = "<font color='#FF0000'>Invalid email address. Please try again.</font>";	
				} else if(response == "2"){
					var status_1 = document.getElementById('share_status_1');
					status_1.innerHTML = "<font color='#FF0000'>Subject required. Please try again.</font>";	
				} else {
					document.form_share.email.value = '';
					document.form_share.msg.value = '';
					document.form_share.msg.innerHTML = '';
					document.form_share.human_share.value = '';
					var chars = "0123456789abcdefghiklmnopqrstuvwxyz";
					var string_length = 8;
					var randomstring = '';
					for (var i=0; i<string_length; i++) {
						var rnum = Math.floor(Math.random() * chars.length);
						randomstring += chars.substring(rnum,rnum+1);
					}
					document.form_share.pass_share.value = randomstring;
					var human_img = document.getElementById('human_img');
					human_img.innerHTML = "<img src='http://www.sportsvolcano.com/gd/human-check.php?id="+randomstring+"' border='0' alt='' />";
					var status = document.getElementById('share_status');
					status.innerHTML = "Please enter the email address of the person you would like to share this article with.";
					var status_1 = document.getElementById('share_status_1');
					status_1.innerHTML = "Please enter the subject of your email.";
					var status_2 = document.getElementById('share_status_2');
					status_2.innerHTML = "Please enter a message to send with your email.";
					var status_3 = document.getElementById('share_status_3');
					status_3.innerHTML = "Please confirm your identity.";
					var sent = document.getElementById('share_sent');
					sent.innerHTML = "Congratulations, your email has been sent!";
				}
			}
		}
		xmlHttp.send(params);
	} else {
		var status_3 = document.getElementById('share_status_3');
		status_3.innerHTML = "<font color='#FF0000'>Incorrect entry. Please try again.</font>";	
	}
}

function GetXmlHttpObject(){
	var xmlHttp=null;
	try{
	  // Firefox, Opera 8.0+, Safari
	  xmlHttp=new XMLHttpRequest();
	  }
	catch (e)
	  {
	  // Internet Explorer
	  try
		{
		xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		}
	  catch (e)
		{
		xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
		}
	  }
	return xmlHttp;
}