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

	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
	   alert(text);
	   return false;
	}

	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		alert(text);
		return false;
	}

	if (str.indexOf(at,(lat+1))!=-1){
		alert(text);
		return false;
	}

	if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		alert(text);
		return false;
	}

	if (str.indexOf(dot,(lat+2))==-1){
		alert(text);
		return false;
	}

	if (str.indexOf(" ")!=-1){
		alert(text);
		return false;
	}

	return true;			
}

function doValidate(str1,str2,str3)
{
	var email = document.getElementById('rsm_email');
	
	if ( email.value==null || email.value=="" )
	{
		alert(str2);
		email.focus();
		return false;
	}
	
	if (email.value == str1)
	{
		email.value="";
		email.focus();
		return false;
	}
	
	if (checkEmail(email.value,str3)==false)
	{
		email.value="";
		email.focus();
		return false;
	}
	
	return true;
}
 
function rsm_show_fields(root,val,fields)
{
	xmlobject=buildXmlHttp();
	xmlobject.onreadystatechange=function()
    {
		if(xmlobject.readyState==4)
		{
			document.getElementById('rsm_fields_location').innerHTML = xmlobject.responseText;
			document.getElementById('rsm_loader').style.display = 'none';
		}
    }
	
	document.getElementById('rsm_fields_location').innerHTML = '';
	document.getElementById('rsm_loader').style.display = 'block';
	
	xmlobject.open('GET',root + 'index.php?option=com_rsmail&task=getFields&tmpl=component&cid='+ val +'&fields='+ fields +'&randomTime=' + Math.random(),true);
	xmlobject.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;
}