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;			
	}
function validateForm()
{
	var name=document.subscribe.name;
	var country=document.subscribe.country;
	var services=document.subscribe.services;
	var email=document.subscribe.email;
	
	if((name.value==null)||(name.value==""))
	{
		alert ("Please provide the Name.");
		name.focus();
		return false;
		
	}
	if((country.value==null)||(country.value==""))
	{
		alert ("Please provide the Country.");
		country.focus();
		return false;
		
	}
	if((services.value==null)||(services.value==""))
	{
		alert ("Please provide the Services");
		services.focus();
		return false;
	}
	if (echeck(email.value)==false)
	{
		email.value="";
		email.focus();
		return false;
	}
	
}