function callAjax(strURL, postStr, returnFunc) {
    var xmlHttpReq = false;
    var self = this;
    var return_str = "";
    // Mozilla/Safari
    if (window.XMLHttpRequest) {
        self.xmlHttpReq = new XMLHttpRequest();
    }
    // IE
    else if (window.ActiveXObject) {
        self.xmlHttpReq = new ActiveXObject("Microsoft.XMLHTTP");
    }
    
    self.xmlHttpReq.open('POST', strURL, true);
    self.xmlHttpReq.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
    self.xmlHttpReq.onreadystatechange = function() {
        if (self.xmlHttpReq.readyState == 4) {
            if (returnFunc == "getsuggestmodel") {
                loading_model_suggest = false;
                document.getElementById("ModelSuggest").innerHTML = self.xmlHttpReq.responseText;
                if (self.xmlHttpReq.responseText.length == 0) {
                    clearSuggest();
                } else {
                    clearTimeout (timerid);
                    timerid = setTimeout('clearSuggest()', 10000);
                }
            } 
        }
    }
    self.xmlHttpReq.send(postStr);
}

var loading_model_suggest = false;
var timerid = 0;

function suggestModel () {
    var str = document.SearchForm.Terms2.value;

    if (loading_model_suggest == false && str.length>1) {
        // call suggest script
        
        loading_model_suggest = true;
        
        var curleft = curtop = 0;
        var obj = document.getElementById('fdse_TermsEx');
        if (obj.offsetParent) {
            do {
                curleft += obj.offsetLeft;
                curtop += obj.offsetTop;
            } while (obj = obj.offsetParent);
            curtop = curtop + document.getElementById('fdse_TermsEx').offsetHeight-165;
        }
        
        document.getElementById('ModelSuggest').style.top = curtop + 'px';
        document.getElementById('ModelSuggest').style.left = curleft + 'px';	
        
        var param = "i="+str;
        
        var l_url = 'suggestmodel.php';
        callAjax(l_url, param, "getsuggestmodel");
    } else if (str.length == 0) {
        clearSuggest();
    } else {
        // loading is in progress
    }
}

if( document.addEventListener )
    document.addEventListener( 'click', clearSuggest, false );
else if( document.attachEvent )
    document.attachEvent( 'onclick', clearSuggest );
else
    document.onclick = clearSuggest;

function clearSuggest () {
    document.getElementById("ModelSuggest").innerHTML = '';
}