function validateEmail(elementValue){      
	if(elementValue==""){
		return true;
	}else{
	   var emailPattern = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;
	   return emailPattern.test(elementValue); 
	}
 }

function commentSubmit(){
		
		if($("#txtName").val()!= "" && $("#txtDetail").val() != ""  && $("#txtEmail").val() != "" ) {
			if(validateEmail($("#txtEmail").val())){
				$.post("commentmail.aspx", {txtName: $("#txtName").val()  , txtEmail: $("#txtEmail").val() , txtDetail: $("#txtDetail").val() }, function(data) {
					   $("#divResult").html(data);
					   if(data.indexOf("Thanks")>-1){
							$("#txtName").val("");
							$("#txtEmail").val("");
							$("#txtDetail").val("");
					   }

				});
			}else{
				alert("Wrong Email Format !");
			}
		}else{
			alert("Please Fill input form ( * )");
		}
		

}