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-1){
		    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 Validator(form)
{

	if (form.Fname.value == "")
	{
		alert("Please enter Name");
		form.Fname.focus();
		return false ;
	}
	
	if (form.phone.value == "") 
	{
        alert("Please enter your Telephone Number");
		form.phone.focus();
        return false ;
    }
	else if(isNaN(form.phone.value))
	{
		alert("Please enter valid Telephone Number");
		form.phone.focus();
        return false ;
	}
	if (form.TxtMail.value == "")
		{
			alert("Please enter the Email");
			form.TxtMail.focus();
			return false ;
		}

	if (echeck(form.TxtMail.value)==false){
		//email.value="";
		form.TxtMail.focus();
		return false;
	}
	return true;
}