// JavaScript Document
function checkEmail(e){
		var mailValue = e.value;
		var filter = /^([A-Za-z])([a-zA-Z0-9_\.\-])*\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
		if(!filter.test(mailValue)||mailValue==""||mailValue.length>50){
			alert("input email field in right format");
			return false;
		}
		else
		{
			return true;
		}
}
function checkfirstname(e){
		var firstnameValue = e.value;
		if(firstnameValue ==='') {
			alert("input first name");
			return false;
		}
		else
		{	
			return true;
		}
}
function checklastname(e){
		var lastnameValue = e.value;
		if(lastnameValue ==='') {
			alert("input last name");
			return false;
		}
		else
		{
			return true;
		}
}
function checkPhone(e){
		var phoneValue = e.value;
		var reg=/(^[0-9]{3,5}\-[0-9]{3,5}\-[0-9]{3,6}$)|(^[0-9]{3,5}\-[0-9]{3,9}$)|(^[0-9]{3,14}$)|(^\([0-9]{3,5}\)[0-9]{3,10}$)|(^0{0,1}[0-9]{9-15}$)/;
		if(!reg.test(phoneValue)||phoneValue.length>15||phoneValue ==='') {
			alert("input your phone number in right format");
			return false;
		}
		else
		{	
			return true;
		}
}