function requestPage(url, target) {
  document.getElementById(target).innerHTML = ' Fetching data...';
  if (window.XMLHttpRequest) {
    req = new XMLHttpRequest();
  } else if (window.ActiveXObject) {
    req = new ActiveXObject("Microsoft.XMLHTTP");
  }
  if (req != undefined) {
    req.onreadystatechange = function() {requestPageDone(url, target);};
    req.open("GET", url, true);
    req.send("");
  }
}  

function requestPageDone(url, target) {	 
  if (req.readyState == 4) { // only if req is "loaded"
    if (req.status == 200) { // only if "OK"	
      document.getElementById(target).innerHTML = req.responseText;
    } else {   
      document.getElementById(target).innerHTML="Load Error:\n"+ req.status + "\n" +req.statusText;
    }
  }
}

function loadPage(name, div) {
	//
	// Put the Query String back again!
	//
	requestPage(name+window.location.search,div);
	return false;
}		

function getPage(target)
{	
	if((navigator.userAgent.match(/iPhone/i)) || (navigator.userAgent.match(/iPod/i))) 
	{ 			
		loadPage("iphone.php", target); 
	}	 
	else if(navigator.userAgent.match(/iPad/i) != null)	  
	{
		loadPage("ipad.php", target);
	}	   
	else												   
	{		   
		loadPage("default.php", target);
	}
}	

getPage('main');