var xmlHttp

function clearSelect(id) {
	document.getElementById(id).innerHTML=""
}
function fiel_fields(id) {
	var url="http://addus.lt/index.php?AJAX=1&select="+id
	xmlHttp=GetXmlHttpObject(stateChanged)
	xmlHttp.open("GET", url , true)
	xmlHttp.send(null)
}
function stateChanged(id) 
{ 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{ 
		document.getElementById("field1").innerHTML=xmlHttp.responseText 
	}
} 
function GetXmlHttpObject(handler)
{ 
	var objXmlHttp=null

	if (navigator.userAgent.indexOf("Opera")>=0)
	{
	alert("This example doesn't work in Opera") 
	return 
	}
	if (navigator.userAgent.indexOf("MSIE")>=0)
	{ 
		var strName="Msxml2.XMLHTTP"
		if (navigator.appVersion.indexOf("MSIE 5.5")>=0)
		{
		strName="Microsoft.XMLHTTP"
		} 
		try
		{ 
		objXmlHttp=new ActiveXObject(strName)
		objXmlHttp.onreadystatechange=handler 
		return objXmlHttp
		} 
		catch(e)
		{ 
		alert("Error. Scripting for ActiveX might be disabled") 
		return 
		} 
	} 
	if (navigator.userAgent.indexOf("Mozilla")>=0)
	{
		objXmlHttp=new XMLHttpRequest()
		objXmlHttp.onload=handler
		objXmlHttp.onerror=handler 
		return objXmlHttp
	}
}
function calculate(reg,reg2,valiuta)
{
	var suma = parseInt(reg) + parseInt(reg2)
	for (i=2;i<5;i++)
	{
		if (i<4)
		{
			suma = Math.ceil(parseInt(suma) + parseInt(document.getElementById("field"+i).value)*parseInt(document.getElementById("weeks").value) )
			if (document.getElementById("field"+i).value!='0')
			{
				document.getElementById("field"+i+"_info").innerHTML=document.getElementById("field"+i).value+" x "+document.getElementById("weeks").value+" = "+parseInt(document.getElementById("field"+i).value)*parseInt(document.getElementById("weeks").value)
			}
			else
			{
				document.getElementById("field"+i+"_info").innerHTML=""	
			}
		}
		else
		{
			suma = Math.ceil(parseInt(suma) + parseInt(document.getElementById("field"+i).value) )
			if (document.getElementById("field"+i).value!='0')
			{
				document.getElementById("field"+i+"_info").innerHTML=document.getElementById("field"+i).value
			}
			else
			{
				document.getElementById("field"+i+"_info").innerHTML=""	
			}
		}
	}
	if (document.getElementById("extra").value!='0')
	{
		suma = Math.ceil(parseInt(suma)+parseInt(document.getElementById("extra").value)*parseInt(document.getElementById("weeks").value))
		document.getElementById("extra_info_block").innerHTML=""
		document.getElementById("extra_info_block").innerHTML='<div class="name">Papildomas vasaros mokestis</div><div id="extra_info" class="info">&nbsp;</div>'
		document.getElementById("extra_info").innerHTML=document.getElementById("extra").value+" x "+document.getElementById("weeks").value+" = "+parseInt(document.getElementById("weeks").value)*parseInt(document.getElementById("extra").value)
	}
	else
	{
			document.getElementById("extra_info").innerHTML=""
			document.getElementById("extra_info_block").innerHTML=""
	}
	document.getElementById("sum").innerHTML="Suma: "+suma+" "+valiuta
}