// JavaScript Document

$(document).ready(function(){
    
    //called when key is pressed in textbox
	$("#phone").keypress(function (e)  
	{ 
	  //if the letter is not digit then display error and don't type anything
	  if( e.which!=8 && e.which!=0 && (e.which<48 || e.which>57))
	  {
		//display error message
		$("#errmsg").html("Digits Only").show().fadeOut("slow"); 
	    return false;
      }	
	});

  });