function convertRates() {
 	var http;
	try {
		http=new XMLHttpRequest();
	}
	catch (e) {
	    try {
			http=new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e) {
			try {
				http=new ActiveXObject("Microsoft.XMLHTTP");
			}
			catch (e) {
				alert("Vaš web browser ne podržava AJAX!");
				return false;
			}
		}
	} 
	
	divRes = document.getElementById('resultplace');
	divRes.innerHTML= '<div id="result">Molimo Sačekajte...</div>';

	divInverse = document.getElementById('inverse');
	
		
	fr = document.getElementById('fromrate');
	tr = document.getElementById('torate');
	hm = document.getElementById('howmuch'); 
				
	var url = "index.php?page=converter";
	//url = "bla";
	var fromrate = fr.value;
	var torate = tr.value;
	var howmuch = hm.value;
	
	//http = newAjax();
	var params = "calc=1&fromrate="+fromrate+"&torate="+torate+"&howmuch="+howmuch+"&id="+Math.random();
	http.open("POST", url, true);

	http.onreadystatechange = function() {//Call a function when the state changes.
		if(http.readyState == 4) {
			divRes.innerHTML='<div id="result">'+http.responseText+'</div>';
		}
	}
	http.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	http.setRequestHeader("Content-length", params.length);
	//http.setRequestHeader("Connection", "close");
	http.send(params); 
			
	divInverse.innerHTML= "<br /><a style=\"font-size:20px;\" href=\"javascript:inverse();\" /><img src=\"../images/reload.gif\" alt=\"Obrnuto\" title=\"Obrnuto\" /></a>";
}
	  
function checkKey(e) {
	var key;
	if(window.event)
		key = window.event.keyCode;
	else
		key = e.which; 
	if(key == 13) 
		convertRates();
} 
	
function inverse() {
	fr = document.getElementById('fromrate');
	tr = document.getElementById('torate');
	hm = document.getElementById('howmuch'); 
	
	var temp = fr.value;
	fr.value = tr.value;
	tr.value = temp;
	convertRates();
}