how to show div popup to the center of page?

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hi,

How to show div popup to the center of page.my code as below

JavaScript

<style>
#modalContainer {
	background-color:transparent;
	position:absolute;
	width:100%;
	height:100%;
	top:0px;
	left:0px;
	z-index:10000;
	background-image:url(tp.png); } 
#alertBox {
	position:relative;
	width:300px;
	min-height:100px;
	border:2px solid #999;
	background-color:#F2F5F6;
	background-image:url(alert.png);
	background-repeat:no-repeat;
	background-position:20px 30px;
} 
#modalContainer > #alertBox {
	position:fixed;
} 
#alertBox h1 {
	margin:1px;
	font:bold 12px verdana,arial;
	background-color:#367cab;
	color:#FFF;
	border-bottom:1px solid #000;
	padding:2px 0 2px 5px;
} 
#alertBox p {
	font:0.7em verdana,arial;
	height:50px;
	padding-left:1px;
	margin-left:8px;
} 
</style>
<script>
 var ALERT_TITLE = "Message";
 var ALERT_BUTTON_TEXT = "Ok";
 var DeletionConfirmation = 0;
 var isMozilla;
 var objDiv = null;
 var over = false; 
if(document.getElementById) {	
		window.alert = function(txt) 
{ createCustomAlert(txt); } 
	
}
function createCustomAlert(txt) {
      Initialize();
	d = document; 
	if(d.getElementById("modalContainer")) return; 
	mObj = d.getElementsByTagName("body")[0].appendChild(d.createElement("div"));
	mObj.id = "modalContainer";
	mObj.style.height = d.documentElement.scrollHeight + "px";
	alertObj = mObj.appendChild(d.createElement("div"));
	alertObj.id = "alertBox";      
	if(d.all && !window.opera) alertObj.style.top = document.documentElement.scrollTop + "px";
	alertObj.style.left = (d.documentElement.scrollWidth - alertObj.offsetWidth)/2 + "px";
	alertObj.style.visiblity="visible"; 
	h1 = alertObj.appendChild(d.createElement("h1"));
	h1.appendChild(d.createTextNode(ALERT_TITLE));
      h1.onmouseover= function() {over=true;return false;}
      h1.onmouseout= function() {over=false;return false;}
      h1.style.cursor="move";
	msg = alertObj.appendChild(d.createElement("p"));
	//msg.appendChild(d.createTextNode(txt));
	msg.innerHTML = txt;
	btn = alertObj.appendChild(d.createElement("a"));
	btn.id = "closeBtn";
	btn.appendChild(d.createTextNode(ALERT_BUTTON_TEXT));
	btn.href = "#";
	btn.focus();
	btn.onclick = function() { removeCustomAlert();return false; } 
	alertObj.style.display = "block";      
	
}
 
function removeCustomAlert() {    
	document.getElementsByTagName("body")[0].removeChild(document.getElementById("modalContainer"));
}
function AlertMsg()
{
  alert('This is a custom alert dialog that was created by over-riding the window.alert method.');   
}
function Initialize()
{  
    isMozilla = (document.all) ? 0 : 1;
    if (isMozilla) {
        document.captureEvents(Event.MOUSEDOWN | Event.MOUSEMOVE | Event.MOUSEUP);
    }
    document.onmousedown = MouseDown;
    document.onmousemove = MouseMove;
    document.onmouseup = MouseUp;
}
function MouseDown(e) {
    if (over) {
        if (isMozilla) {
            objDiv = document.getElementById('alertBox');
            X = e.layerX;
            Y = e.layerY;
            return false;
        }
        else {
            objDiv = document.getElementById('alertBox');
            objDiv = objDiv.style;
            X = event.offsetX;
            Y = event.offsetY;
        }
    }
}
function MouseMove(e) {   
    if (objDiv) {
        if (isMozilla) {
            objDiv.style.top = (e.pageY - Y) + 'px';
            objDiv.style.left = (e.pageX - X) + 'px';
            return false;
        }
        else {          
            objDiv.pixelLeft = event.clientX - X + document.body.scrollLeft;
            objDiv.pixelTop = event.clientY - Y + document.body.scrollTop;
            return false;
 
        }
    }
}
function MouseUp() {
    objDiv = null;
}
</script>
<body> 
<input type="button" value = "Alert"  onclick="AlertMsg()">
</body>
</html>

Thanks....

Posted 14-Jun-13 1:38am

hasbina

Updated 14-Jun-13 2:53am

v3

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Comments

Sunasara Imdadhusen 14-Jun-13 7:50am

So what is your problem?

hasbina 14-Jun-13 8:13am

@Sunasara
now showing it on top of page.how to make to center of page.

Thanks7872 14-Jun-13 7:51am

Try margin:0 auto 0 auto; in #alertbox

hasbina 14-Jun-13 8:04am

@Rohan
i added margin:0 auto 0 auto in #alertbox,but no change..

2 solutions

Solution 2

Refer to this one.I hope it would be helpful

Using jQuery to center a DIV on the screen[^]

popup in center of screen css[^][Try each link one by one]

Also try position:fixed

Posted 14-Jun-13 2:15am

Thanks7872

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Zafar Sultan · Accepted Answer · 2013-06-14T03:02:00

Hasbina,
If I were you I would be using jquery as it handles cross browser syntax. Anyways there is an extension you can usefor this purpose. But you will have to include jquery file. In the head section of your page add

HTML

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.1/jquery.min.js" type="text/javascript"></script>

At the end of your script add:

JavaScript

jQuery.fn.center = function () {
this.css("position", "absolute");
this.css("top", Math.max(0, (($(window).height() - $(this).outerHeight()) / 2) + $(window).scrollTop()) + "px");
this.css("left", Math.max(0, (($(window).width() - $(this).outerWidth()) / 2) +
$(window).scrollLeft()) + "px");
return this;
}

Now, in you function replace

JavaScript

if(d.all && !window.opera) alertObj.style.top = document.documentElement.scrollTop + "px";
alertObj.style.left = (d.documentElement.scrollWidth - alertObj.offsetWidth)/2 + "px";

with

JavaScript

$(alertObj).center();

how to show div popup to the center of page?

2 solutions

Solution 2

Solution 3

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