// JavaScript Document
function echeck(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 ID")
		   return false
		}

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

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

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

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

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

	}
	
	
function greetingvalidation()
{

	var firstname = document.greetings_form.tofirstname.value ;
	//alert(firstname);
	var toemail = document.greetings_form.toemail.value ;
	//alert(toemail);
	var fromfirstname = document.greetings_form.fromfirstname.value ;
	//alert(fromfirstname);
	var fromemail = document.greetings_form.fromemail.value ;
	//alert(fromemail);
	
	if (document.greetings_form.tofirstname.value == '') 
	{
		alert('Please fill in your tofirstname');
		return false;
	}		
	
	if (document.greetings_form.toemail.value == '') 
	{
		alert('Please fill in your toemail');
		return false;
	}		
	if (document.greetings_form.fromfirstname.value == '') 
	{
		alert('Please fill in your  fromfirstname!');
		return false;
	}
	if (document.greetings_form.fromemail.value == '') 
	{
		alert('Please fill in your fromemail');
		return false;
	}	
	if (echeck(toemail)==false){
	toemail=""
	//toemail.focus()
	return false
	}
	if (echeck(fromemail)==false){
	fromemail=""
	//fromemail.focus()
	return false
	}
}