function createXMLHttpRequest()
{
	var XMLhttpObject = null;
	try{
		XMLhttpObject = new XMLHttpRequest();
	}catch(e){
		try{
			XMLhttpObject = new ActiveXObject("Msxml2.XMLHTTP");
		}catch(e){
			try{
				XMLhttpObject = new ActiveXObject("Microsoft.XMLHTTP");
			}catch(e){
				return null;
			}
		}
	}
	return XMLhttpObject;
}

function Search_getCategory() {
	Search_getChara();
	Search_getSize();
}

function Search_getChara() {
        xmlhttp = createXMLHttpRequest();
        var category_code = document.getElementById("categoryCode").value;
        var charaSel = document.getElementById("charaSel").value;
        if (xmlhttp) {
                xmlhttp.onreadystatechange = Search_checkCategory;
                //xmlhttp.open("GET", "category_disp.php", true);
                xmlhttp.open("post", "chara_disp.php", true);
                //xmlhttp.send(null);
                xmlhttp.setRequestHeader('If-Modified-Since', 'Wed, 15 Nov 1995 00:00:00 GMT');
                xmlhttp.setRequestHeader("Content-Type" , "application/x-www-form-urlencoded");
                xmlhttp.send("category_code="+encodeURI(category_code)+"&chara_selected="+encodeURI(charaSel));


        }
}
function Search_getSize() {
        xmlhttp2 = createXMLHttpRequest();
        var category_code = document.getElementById("categoryCode").value;
        var sizeSel = document.getElementById("sizeSel").value;
        if (xmlhttp2) {
                xmlhttp2.onreadystatechange = Search_checkSize;
                xmlhttp2.open("post", "size_disp.php", true);
                xmlhttp2.setRequestHeader('If-Modified-Since', 'Wed, 15 Nov 1995 00:00:00 GMT');
                xmlhttp2.setRequestHeader("Content-Type" , "application/x-www-form-urlencoded");
                xmlhttp2.send("category_code="+encodeURI(category_code)+"&size_selected="+encodeURI(sizeSel));


        }
}

function Search_checkCategory() {
	if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
		document.getElementById("chara_display").innerHTML = xmlhttp.responseText;
	}
}

function Search_checkSize() {
	if (xmlhttp2.readyState == 4 && xmlhttp2.status == 200) {
		document.getElementById("size_display").innerHTML = xmlhttp2.responseText;
	}
}