// Function to validate email id
// Function to validate the email address
function checkemail(str){
	var at="@"
	var dot="."
	var lat=str.indexOf(at)
	var lstr=str.length
	var ldot=str.indexOf(dot)
	//var ldomainanme=str.substring(lat+1,lstr)
	//var hotmaildomain="hotmail.com"
	//var yahoodomain="yahoo.com"
	//var gmaildomain="gmail.com"
	//var aoldomain="aol.com"
	
	if (str.indexOf(at)==-1){
	   alert("Email address you have entered is invalid")
	   return false
	}

	if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr){
	   alert("Email address you have entered is invalid")
	   return false
	}

	if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr){
		alert("Email address you have entered is invalid")
		return false
	}

	 if (str.indexOf(at,(lat+1))!=-1){
		alert("Email address you have entered is invalid")
		return false
	 }

	 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		alert("Email address you have entered is invalid")
		return false
	 }

	 if (str.indexOf(dot,(lat+2))==-1){
		alert("Email address you have entered is invalid")
		return false
	 }
	
	 if (str.indexOf(" ")!=-1){
		alert("Email address you have entered is invalid")
		return false
	 }
	/* if (ldomainanme == hotmaildomain){
		alert("hotmail id is not a valid id")
		return false
	 }
	 if (ldomainanme == yahoodomain){
		alert("yahoo id is not a valid id")
		return false
	 }
	 if (ldomainanme == aoldomain){
		alert("aol id is not a valid id")
		return false
	 }
	 if (ldomainanme == gmaildomain){
		alert("gmail id is not a valid id")
		return false
	 } */
	
	 return true					
}
// To validate the overall data
function validatedata(){
	if(document.frmcontact.fname.value==""){
		alert('Please enter your First name, it cannot be left blank');
		document.frmcontact.fname.focus()
		return false;		
	}


	if(document.frmcontact.lname.value==""){
		alert('Please enter your Last name, it cannot be left blank');
		document.frmcontact.lname.focus()
		return false;		
	}
	
	if(document.frmcontact.email.value==""){
		alert('Please enter a valid Email, it cannot be left blank');
		document.frmcontact.email.focus()
		return false;		
	}

	if (checkemail(document.frmcontact.email.value)==false){
		document.frmcontact.email.focus()
		return false
	}

	document.frmcontact.method="POST"; 
	document.frmcontact.action="contact_us.php"
	document.frmcontact.submit();
	return true;
}