/************************************

	Custom Alert Demonstration
	version 1.0
	last revision: 02.02.2005
	steve@slayeroffice.com

	Should you improve upon this source please
	let me know so that I can update the version
	hosted at slayeroffice.

	Please leave this notice in tact!

************************************/

var ALERT_TITLE = "Oops!";
var ALERT_BUTTON_TEXT = "Ok";

if(document.getElementById) {
	window.alert = function(txt) {
		createCustomAlert(txt);
	}
}

// Browser Detection Javascript
// copyright 1 February 2003, by Stephen Chapman, Felgall Pty Ltd

// You have permission to copy and use this javascript provided that
// the content of the script is not changed in any way.

function whichBrs() {
	var agt=navigator.userAgent.toLowerCase();
	if (agt.indexOf("opera") != -1) return 'Opera';
	if (agt.indexOf("staroffice") != -1) return 'Star Office';
	if (agt.indexOf("webtv") != -1) return 'WebTV';
	if (agt.indexOf("beonex") != -1) return 'Beonex';
	if (agt.indexOf("chimera") != -1) return 'Chimera';
	if (agt.indexOf("netpositive") != -1) return 'NetPositive';
	if (agt.indexOf("phoenix") != -1) return 'Phoenix';
	if (agt.indexOf("firefox") != -1) return 'Firefox';
	if (agt.indexOf("safari") != -1) return 'Safari';
	if (agt.indexOf("skipstone") != -1) return 'SkipStone';
	if (agt.indexOf("msie") != -1) return 'Internet Explorer';
	if (agt.indexOf("netscape") != -1) return 'Netscape';
	if (agt.indexOf("mozilla/5.0") != -1) return 'Mozilla';
	if (agt.indexOf('\/') != -1) {
		if (agt.substr(0,agt.indexOf('\/')) != 'mozilla') {return navigator.userAgent.substr(0,agt.indexOf('\/'));}
		else return 'Netscape';
	}else if (agt.indexOf(' ') != -1)
		return navigator.userAgent.substr(0,agt.indexOf(' '));
	else return navigator.userAgent;
}



function createCustomAlert(txt) {
	var browserName = whichBrs(); 
	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(browserName != "Internet Explorer" && 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));

	msg = alertObj.appendChild(d.createElement("p"));
	//msg.appendChild(d.createTextNode(txt));
	msg.innerHTML = txt;

	divBtn = alertObj.appendChild(d.createElement("div"));
	divBtn.id = "divBtn";
	divBtn.align="right";
	btn = divBtn.appendChild(d.createElement("a"));
	btn.id = "closeBtn";
	btn.appendChild(d.createTextNode(ALERT_BUTTON_TEXT));
	btn.href = "javascript: void(0)";
	btn.focus();
	btn.onclick = function() { removeCustomAlert();return false; }

	alertObj.style.display = "block";
	
}

function removeCustomAlert() {
	document.getElementsByTagName("body")[0].removeChild(document.getElementById("modalContainer"));
}