<input type="button" value="点击这里" onclick="alert2('测试效果');" />
function alert2(str) { var msgw,msgh,bordercolor; msgw = 400;//提示窗口的宽度 msgh = 100;//提示窗口的高度 titleheight = 25 //提示窗口标题高度 bordercolor = "#336699";//提示窗口的边框颜色 titlecolor = "#99CCFF";//提示窗口的标题颜色 var sWidth,sHeight; sWidth = document.body.offsetWidth; sHeight = screen.height; var bgObj = document.createElement("div"); bgObj.setAttribute('id', 'bgDiv'); bgObj.style.position = "absolute"; bgObj.style.top = "0"; bgObj.style.background = "#777"; bgObj.style.filter = "progid:DXImageTransform.Microsoft.Alpha(style=3,opacity=25,finishOpacity=75"; bgObj.style.opacity = "0.6"; bgObj.style.left = "0"; bgObj.style.width = sWidth + "px"; bgObj.style.height = sHeight + "px"; bgObj.style.zIndex = "10000"; document.body.appendChild(bgObj); var msgObj = document.createElement("div") msgObj.setAttribute("id", "msgDiv"); msgObj.setAttribute("align", "center"); msgObj.style.background = "white"; msgObj.style.border = "1px solid " + bordercolor; msgObj.style.position = "absolute"; msgObj.style.left = "50%"; msgObj.style.top = "50%"; msgObj.style.font = "12px/1.6em Verdana, Geneva, Arial, Helvetica, sans-serif"; msgObj.style.marginLeft = "-225px"; msgObj.style.marginTop = -75 + document.documentElement.scrollTop + "px"; msgObj.style.width = msgw + "px"; msgObj.style.height = msgh + "px"; msgObj.style.textAlign = "center"; msgObj.style.lineHeight = "25px"; msgObj.style.zIndex = "10001"; var title = document.createElement("h4"); title.setAttribute("id", "msgTitle"); title.setAttribute("align", "right"); title.style.margin = "0"; title.style.padding = "3px"; title.style.background = bordercolor; title.style.filter = "progid:DXImageTransform.Microsoft.Alpha(startX=20, startY=20, finishX=100, finishY=100,style=1,opacity=75,finishOpacity=100);"; title.style.opacity = "0.75"; title.style.border = "1px solid " + bordercolor; title.style.height = "18px"; title.style.font = "12px Verdana, Geneva, Arial, Helvetica, sans-serif"; title.style.color = "white"; title.style.cursor = "pointer"; title.innerHTML = "关闭"; title.onclick = function() { document.body.removeChild(bgObj); document.getElementById("msgDiv").removeChild(title); document.body.removeChild(msgObj); } document.body.appendChild(msgObj); document.getElementById("msgDiv").appendChild(title); var txt = document.createElement("p"); txt.style.margin = "1em 0" txt.setAttribute("id", "msgTxt"); txt.innerHTML = str; document.getElementById("msgDiv").appendChild(txt); }