function IsNumeric(sText)
{
   var ValidChars = "0123456789.";
   var IsNumber=true;
   var Char;
   for (i = 0; i < sText.length && IsNumber == true; i++) 
	  { 
	  Char = sText.charAt(i); 
	  if (ValidChars.indexOf(Char) == -1) 
		 {
		 IsNumber = false;
		 }
	  }
   return IsNumber;
}

function toggleSubmitButton(objectID)
{
	if(document.getElementById(objectID).disabled == false)
		document.getElementById(objectID).disabled = true;
	else
		document.getElementById(objectID).disabled = false;
}

function bookmark_us(url, title)
{
	if (window.sidebar) // firefox
		window.sidebar.addPanel(title, url, "");
	else if(window.opera && window.print){ // opera
		var elem = document.createElement('a');
		elem.setAttribute('href',url);
		elem.setAttribute('title',title);
		elem.setAttribute('rel','sidebar');
		elem.click();
	}
	else if(document.all)// ie
		window.external.AddFavorite(url, title);
}

function checkCoupon(couponCode)
{
	var xmlHttp;
	var seed = Math.floor(Math.random()*99999);
	try
	{
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer
		try
		{
		xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			try
			{
			xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e)
			{
				alert("Your browser does not support AJAX!");
				return false;
			}
		}
	}
	xmlHttp.onreadystatechange=function()
	{
		if(xmlHttp.readyState==4)
		{
			document.getElementById('couponSuccess').innerHTML=xmlHttp.responseText;
		}
	}
	xmlHttp.open("GET","https://www.estateplanners.com/ajax/coupon.php?cc=" + couponCode + "&seed=" + seed,true);
	xmlHttp.send(null);
}