// JavaScript Document
function createRequestObject() 
{
    var ro;
    var browser = navigator.appName;
    if(browser == "Microsoft Internet Explorer"){
        ro = new ActiveXObject("Microsoft.XMLHTTP");
    }else{
        ro = new XMLHttpRequest();
    }
    return ro;
}

var http = createRequestObject();

function sndReq(res, sel) 
{
	sel = sel || 0;
	var category_id = document.contact_info.category[document.contact_info.category.selectedIndex].value;
	if (res == '')
	{
		category_id = res;
	}
	
	
	http.open('get', 'category_ajax.php?cid='+category_id+'&sel='+sel);
	
	http.onreadystatechange = handleResponse;
	http.send(null);
}

function handleResponse() 
{
    if(http.readyState == 4)
	{	
	    var response = http.responseText;
        var update = new Array();

        if(response.indexOf('|' != -1)) {
            update = response.split('|');	
		}			

		if(update[0] == 'success') 
		{
			var message = update[1];
			document.getElementById('model').innerHTML = message;
        }
		
		if (update[0] == 'error') 
		{
			var error = update[1];
			document.getElementById('model').innerHTML = update[2];
			alert("Error: "+error);
		}
    }
}