function stopRKey(evt) {
  var evt = (evt) ? evt : ((event) ? event : null);
  var node = (evt.target) ? evt.target : ((evt.srcElement) ? evt.srcElement : null);
  if ((evt.keyCode == 13) && (node.type=="text"))  {return false;}
}

document.onkeypress = stopRKey;


var xmlHttp;
var yht=0;


// POSTITOIMIPAIKKA
function validoiKentta(str)
{ 
	xmlHttp=GetXmlHttpObject();
	if (xmlHttp==null)
	 {
		 alert ("Browser does not support HTTP Request");
	 	return;
	 }
	var url="php/ajax_formvalidation.php";
	url=url+"?q="+str;
	url=url+"&sid="+Math.random();
	xmlHttp.onreadystatechange=stateChanged;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
}

function stateChanged() 
{ 
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
 {
 	if (xmlHttp.responseText.length > 1) {
 		 document.getElementById("viesti").style.visibility = "visible";
		 document.getElementById("viesti").innerHTML = xmlHttp.responseText;
		 document.getElementById("nappi").style.visibility = "hidden";
		 //document.getElementById("nappi").disabled="true";
 		 //document.getElementById("toimipaikka").value=xmlHttp.responseText;
 	} else {
 		document.getElementById("viesti").style.visibility = "hidden";
		document.getElementById("nappi").style.visibility = "visible";
		//document.getElementById("nappi").disabled="false";
 	    //document.getElementById("toimipaikka").value= "";
 	}
 } 
}

function GetXmlHttpObject()
{
var xmlHttp=null;
try
	 {
	 // Firefox, Opera 8.0+, Safari
	 xmlHttp=new XMLHttpRequest();
	 }
	catch (e)
	 {
	 //Internet Explorer
	 try
	  {
	  xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
	  }
	 catch (e)
	  {
	  xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
	  }
	 }
return xmlHttp;
}