function checkemail(str){
  var filter=/^.+@.+\..{2,3}$/
  return (filter.test(str))
}

function checkTextBox(element,errMsg){
	if(element.value == ''){
		alert(errMsg);
		element.focus();
		return false;
	}
	return true;
}


function checkMobil(val){
	var test = new RegExp("^[89][0-9]{7,7}$");
	return test.test(val);
}
function checkResidential(val){
	var test = new RegExp("^[6][0-9]{7,7}$");
	return test.test(val);
}
function checkDigit(val){
	var test = new RegExp("^[0-9][0-9]+[0-9]$");
	return test.test(val);
}