function valid_email(mailStr){
	var matchStr=mailStr;
	var isValid = (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,4})+$/.test(matchStr));
	
	if(isValid){
		return true;
	}
	else{
		return false;
	}
}
function trim(str) {
	return str.replace(/^\s*|\s*$/g,"");
}

function checkForm1(url){
//alert("test");
document.getElementById('ftemailid').value = trim(document.getElementById('ftemailid').value);
if(document.getElementById('ftemailid').value==""){ 
		alert("Please enter e-mail id");
		document.getElementById('ftemailid').focus();
		
		return false;
	}
	if (document.getElementById('ftemailid').value!="" && !valid_email(document.getElementById('ftemailid').value)){ 
		alert("Please enter valid email id");
		document.getElementById('ftemailid').focus();
		
		return false;
	}
	document.getElementById('ftemailid').value = (document.getElementById('ftemailid').value).toLowerCase();
	var yourId=document.getElementById("ftemailid").value;
	 
     //var friendId=document.getElementById("FriEmId").value;
	 //added for showing submitting..............
//alert('before ');
		document.getElementById('displayftdiv').style.display='none';
		document.getElementById('thankyouftdiv').style.display='block';
	//end of adding submitting.....


	if (window.XMLHttpRequest) { // Mozilla, Safari, ...
  		http_request = new XMLHttpRequest();
	} else if (window.ActiveXObject) { // IE
		http_request = new ActiveXObject("Microsoft.XMLHTTP");
	}
	
	if (!http_request) {
		alert('Giving up :( Cannot create an XMLHTTP instance');
		return false;
	}
	if(http_request){
	//alert(url);
			url=url +"?&emailId="+yourId  ;
			http_request.onreadystatechange = function() { 

				if (http_request.readyState == 4){
		         // document.getElementById("indRefTnk").innerHTML = http_request.responseText;
				//  document.getElementById('indRef').style.display='none';
				
				document.getElementById('displayftdiv').style.display='none';
		         document.getElementById('thankyouftdiv').style.display='block';
				 
				  
		         
				  
				  
				  return true;
		         } 
			} 
			http_request.open ("POST", url, true);			
			http_request.send(null);
}

return false;
}