<script Language="JavaScript">

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 Blank_TextField_Validator()
{

if (f1.tname.value == "")
{
alert("Please Enter your name.");
f1.tname.focus();
return (false);
}

if (f1.tadd.value == "")
{
alert("Please Enter your Address.");
f1.tadd.focus();
return (false);
}


var emailID=document.f1.tymail
if ((emailID.value==null)||(emailID.value=="")){
		alert("Please Enter your Email ID")
		emailID.focus()
		return false
	}
if (echeck(emailID.value)==false){
		emailID.value=""
		emailID.focus()
		return false
	}


if (f1.tsub.value == "")
{
alert("Please Enter Mail Subject.");
f1.tsub.focus();
return (false);
}

if (f1.tbody.value == "")
{
alert("Please Specify Your Query Here.");
f1.tbody.focus();
return (false);
}

return (true);
}

</script>
