function check_availability( objid, loadarea )

{

  var myobj=document.getElementById(objid)

  var address_string = "http://www.allergyeats.com/code/check_name.php?name=" + myobj.value
  

  ajaxpage(address_string, loadarea)

}       

 

function ajaxpage(url, c_id)

{

  var page_request = false

 

  if (window.XMLHttpRequest)     // if Mozilla, Safari etc

  {

    page_request = new XMLHttpRequest()

  }

  else if (window.ActiveXObject) // if IE

  {

    try

    {

      page_request = new ActiveXObject("Msxml2.XMLHTTP")

    }

    catch (e)

    {

      try

      {

        page_request = new ActiveXObject("Microsoft.XMLHTTP")

      }

      catch (e){}

    }

  }

  else

    return false

 

  page_request.onreadystatechange=function()

  {

    loadpage(page_request, c_id)

  }

 

  anticache=(url.indexOf("?")!=-1) ?

            "&"+new Date().getTime() :

            "?"+new Date().getTime()

 

  page_request.open('GET', url+anticache, true)

  page_request.send(null)

}

 

function loadpage(page_request, c_id)

{

  if (page_request.readyState == 4 &&

          (page_request.status==200 ||

           window.location.href.indexOf("http")==-1))

  {

    document.getElementById(c_id).innerHTML=page_request.responseText
	if (page_request.responseText.indexOf("Sorry") > 0){
		document.mainsearch.username.value="";
		document.mainsearch.username.focus();
	}

   }

}