// JavaScript Document

function trim(str)
{
   return str.replace(/^\s+|\s+$/g,'');
}

function validate()
{	
	if(trim(document.getElementById("name").value) == "" || trim(document.getElementById("name").value) == null)
	{
		alert("Please enter the Name");
		document.getElementById("name").value = "";
		document.getElementById("name").focus();
		return false;
	}
	if(trim(document.getElementById("email").value) == "" || trim(document.getElementById("email").value) == null)
	{
		alert("Please enter the Email");
		document.getElementById("email").value = "";
		document.getElementById("email").focus();
		return false;
	}
	if (echeck(trim(document.getElementById("email").value))==false)
	{
		document.getElementById("email").focus()
		return false;
	}
	/*if(trim(document.getElementById("message").value) == "" || trim(document.getElementById("message").value) == null)
	{
		alert("Please enter the Comments");
		document.form1.comments.value = "";
		document.form1.comments.focus();
		return false;
	}*/
	return true;
}
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
	 }
	 return true					
}