// JavaScript Document

//==============================
//     checklogin()
//==============================
function checklogin()
{
	email = document.userlogin.email.value;
	if (email.length==0)
	 {
		alert("please enter you Account Email");
		document.userlogin.email.value="";
		document.userlogin.email.focus();
		return false;
	 }
	 
	 if(isemail(email)==false){
	 alert("E-mail is wrong!");
	 return false;
	 }
	 
	 password = document.userlogin.Password.value;
	if (password.length==0){
		alert("please enter your password");
		document.userlogin.Password.value="";
		document.userlogin.Password.focus();
		return false;
		}
		return true;
	}
	








function ltrim(s){
    return s.replace( /^\s*/, ""); 
}

function rtrim(s){
    return s.replace( /\s*$/, "");
}

function trim(s){
    return rtrim(ltrim(s));
}


function isempty(v) {
     return !((v == null) || (v.length == 0) || /^\s+$/.test(v));
    }


function isnumber(v) {
     return (!isNaN(v) && !/^\s+$/.test(v));
    }

   function isemail(v){
    return /\w{1,}[@][\w\-]{1,}([.]([\w\-]{1,})){1,3}$/.test(v);
   }



function formatNumber(v){
   return parseInt(v)+'.99';
}