var ALERT_TITLE = "Error!"; var ALERT_BUTTON_TEXT = "Ok"; if (document.getElementById) { window.alert = function(txt) { createCustomAlert(txt); } }
function createCustomAlert(txt) { d = document; if (d.getElementById("modalContainer")) return; mObj = d.getElementsByTagName("body")[0].appendChild(d.createElement("div")); mObj.id = "modalContainer"; mObj.style.height = document.documentElement.scrollHeight + "px"; alertObj = mObj.appendChild(d.createElement("div")); alertObj.id = "alertBox"; if (d.all && !window.opera) alertObj.style.top = document.documentElement.scrollTop + "px"; alertObj.style.left = (d.documentElement.scrollWidth - alertObj.offsetWidth) / 2 + "px"; h1 = alertObj.appendChild(d.createElement("h1")); h1.appendChild(d.createTextNode(ALERT_TITLE)); msg = alertObj.appendChild(d.createElement("p")); msg.innerHTML = txt; btn = alertObj.appendChild(d.createElement("a")); btn.id = "closeBtn"; btn.appendChild(d.createTextNode(ALERT_BUTTON_TEXT)); btn.href = "#"; btn.onclick = function() { removeCustomAlert(); return false; } }
function removeCustomAlert() { document.getElementsByTagName("body")[0].removeChild(document.getElementById("modalContainer")); }