function checkEmail(str) 
{
	var at="@"
	var dot="."
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)
	if (str.indexOf(at)==-1){
	   alert("Invalid E-mail")
	   return false
	}

	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
	   alert("Invalid E-mail")
	   return false
	}

	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		alert("Invalid E-mail")
		return false
	}

	if (str.indexOf(at,(lat+1))!=-1){
		alert("Invalid E-mail")
		return false
	}

	if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		alert("Invalid E-mail")
		return false
	}

	if (str.indexOf(dot,(lat+2))==-1){
		alert("Invalid E-mail")
		return false
	}

	if (str.indexOf(" ")!=-1){
		alert("Invalid E-mail")
		return false
	}

	return true					
}

function doValidate(){
	var email=document.getElementById('rsm_email');
	
	if ((email.value==null)||(email.value=="")){
		alert("Please Enter your Email")
		email.focus()
		return false
	}
	if (checkEmail(email.value)==false){
		email.value=""
		email.focus()
		return false
	}
	return true
 }
 
 function rsm_show_fields(root,val,fields)
 {
	xml=buildXmlHttp();
	xml.onreadystatechange=function()
    {
		if(xml.readyState==4)
		{
			document.getElementById('rsm_fields_location').innerHTML = xml.responseText;
			document.getElementById('rsm_loader').style.display = 'none';
		}
    }
	
	document.getElementById('rsm_fields_location').innerHTML = '';
	document.getElementById('rsm_loader').style.display = 'block';
	
	xml.open('GET',root + 'index.php?option=com_rsmail&task=getFields&tmpl=component&cid='+ val +'&fields='+ fields +'&randomTime=' + Math.random(),true);
	xml.send(null);
 }
 
 function buildXmlHttp()
{
	var xmlHttp;
	try
	{
		xmlHttp=new XMLHttpRequest();
	}
	catch (e)
	{
		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;
			}
		}
	}
	return xmlHttp;
}