/* Ryan Neal version 1.4.0 */ var XMLHttp_heap = new Array(); var local_ajax_undefined; //############################################################################## function XMLHttp_request(post_to, url, params, eID, status, tasks) { if (tasks == local_ajax_undefined) { tasks = new Array(); } if (post_to == "POST" ) { post_to = "innerHTML"; } var success = true; var isIE = false; if ( status != local_ajax_undefined ) { show_element(status); } var request = new Array(); if (window.XMLHttpRequest) { request.push(new XMLHttpRequest()); if (request[0] && request[0].overrideMimeType) { request[0].overrideMimeType('text/xml'); } } else { isIE = true; if (window.ActiveXObject) { try { request.push(new ActiveXObject("Msxml2.XMLHTTP")); } catch (e) { try { request.push(new ActiveXObject("Microsoft.XMLHTTP")); } catch (e) {alert(e)} } } } if (request[0]) { request.push(eID); var timestamp = new Date(); request.push(Math.floor(timestamp.getTime()/1000)); request.push(post_to); request.push(status); request.push(tasks); request[0].onreadystatechange = alertContents; request[0].open('POST', url, true); request[0].setRequestHeader("Content-type", "application/x-www-form-urlencoded"); request[0].setRequestHeader("Content-length", params.length); request[0].setRequestHeader("Connection", "close"); request[0].send(params); XMLHttp_heap.push(request); } else { alert('Cannot create XMLHTTP instance'); success = false; } return success; } //########################################################################## function alertContents() /* shows the nice status_wheel pupulates eID.innerHTML with the response, and runs any queued tasks */ { var timestamp = new Date(); for (var i = 0; i < XMLHttp_heap.length; i++) { if ( XMLHttp_heap[i][4] != local_ajax_undefined ) { show_element(XMLHttp_heap[i][4]); } if (XMLHttp_heap[i][0].readyState == 4) { if(XMLHttp_heap[i][0].status == 200) { var response = XMLHttp_heap[i][0].responseText.replace(/(^|<\/html>$)/g,''); eval('document.getElementById(XMLHttp_heap[i][1]).' + XMLHttp_heap[i][3] + ' = response;'); while (XMLHttp_heap[i][5].length) { eval(XMLHttp_heap[i][5].pop()); } if ( XMLHttp_heap[i][4] != local_ajax_undefined ) { hide_element(XMLHttp_heap[i][4]); } } } } for (var i = XMLHttp_heap.length -1; i >= 0; i--) { if (XMLHttp_heap[i][0].readyState == 4 || (Math.floor(timestamp.getTime()/1000) - XMLHttp_heap[i][2]) > 30) { if ((Math.floor(timestamp.getTime()/1000) - XMLHttp_heap[i][2]) > 30) { XMLHttp_heap[i][0].abort(); if ( XMLHttp_heap[i][4] != local_ajax_undefined ) { hide_element(XMLHttp_heap[i][4]); } } XMLHttp_heap.splice(i, 1); } } } //############################################################################## function show_element(eID) { //show a hidden element // alert('SHOW('+eID+')'); if (document.getElementById(eID) != local_ajax_undefined) { document.getElementById(eID).style.display = 'block'; document.getElementById(eID).style.visibility = 'visible'; } } //############################################################################## function hide_element(eID) { //hide a given element // alert('HIDE('+eID+')'); if (document.getElementById(eID) != local_ajax_undefined) { document.getElementById(eID).style.display = 'none'; document.getElementById(eID).style.visibility = 'hidden'; } } //############################################################################## function pause(ms) { //waif for a specified number of milliseconds var dt = new Date(); var current_dt = null; do { current_dt = new Date(); } while(current_dt -dt < ms); }