function signin()
{
	//alert("123");
	//alert(id);
	var service=document.forms[0].service_id.value;
	var validation=document.forms[0].valid.value;
	//alert(validation);
	if((document.forms[0].usrpwd.value=="") && (document.forms[0].usrname.value==""))
	{
		var display=document.getElementById('displaylogin');
		display.innerHTML="Please enter username and password";
		document.forms[0].usrname.focus();
		return false;
	}
	if((document.forms[0].usrname.value=="") && (document.forms[0].usrpwd.value!=""))
	{
	   // alert("enter usrnme");
		var display=document.getElementById('displaylogin');
		display.innerHTML="Please enter username";
		document.forms[0].usrname.focus();
		return false;
	}
	 if((document.forms[0].usrpwd.value=="") && (document.forms[0].usrname.value!=""))
	{
		var display=document.getElementById('displaylogin');
		display.innerHTML="Please enter password";
		document.forms[0].usrpwd.focus();
		return false;
	}
	var username=document.forms[0].usrname.value;
	var password=document.forms[0].usrpwd.value;
	if(username && password)
	{
		var strURL="singup/checklogin.php?action="+validation+"&usrname="+username+"&usrpwd="+password+"&service_id="+service+"";
		//alert(strURL);
		request(strURL);
	}
}
function request(strURL)
{
	//alert(strURL);
	var xmlHttp;
	if(window.XMLHttpRequest)
	{
		var xmlHttp = new XMLHttpRequest();
	}
	else if(window.ActiveXObject)
	{
		var xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
	}
	xmlHttp.open('POST', strURL, true);
	xmlHttp.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
	xmlHttp.onreadystatechange = function()
	{
		if (xmlHttp.readyState == 4)
		{
			userlogin(xmlHttp.responseText);
		}
	}
    xmlHttp.send(strURL);
}

function userlogin(str)
{

	var res=str;
	//alert(res);
	var valuname=/^[0-9]+$/;
	if(str=="no")
	{
		var display=document.getElementById('displaylogin');
		display.innerHTML="Please check your Username and Password";
		document.forms[0].usrpwd.value="";
		document.forms[0].usrname.value="";
		document.forms[0].usrname.focus();
	}
	else
	if(str == "yes")
	{
		var t=document.forms[0];
		t.action='index.php';
		t.submit();
	}
	else
	{
	//alert(res);

		document.location.href="index.php";

	}
	if(str== "id")
	{
	//alert("ok");
		document.location.href="singup/login_info.php";
	}

}
function signenter(myfield,e)
{
	//alert("hi");
	var keycode;
	if (window.event)
	{
		keycode = window.event.keyCode;
	}
	else if (e)
    {
	 	keycode = e.which;
	}
	else
    {
		return true;
	}
	if (keycode == 13)
	{
		signin();
	}
	else
	{
	return true;
	}
}