javascripot div登陆提示框

 

< html >
< head >
< meta  http-equiv ="Content-Type"  content ="text/html; charset=gb2312"   />
< title > greencss.com title >
< script  type ="text/javascript" >
function sAlert(str,stitle){
var msgw,msgh,bordercolor;
msgw
=300;//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;//浏览器工作区域内页面宽度
sHeight=screen.height;//屏幕高度(垂直分辨率)


//背景层(大小与窗口有效区域相同,即当弹出对话框时,背景显示为放射状透明灰色)
var bgObj=document.createElement("div");//创建一个div对象(背景层)
//
定义div属性,即相当于
//

bgObj.setAttribute('id','bgDiv');
bgObj.style.position
="absolute";
bgObj.style.top
="0";
bgObj.style.background
="#777";
bgObj.style.filter
="progid:DXImageTransform.Microsoft.Alpha(style=2,opacity=25,finishOpacity=75";
bgObj.style.opacity
="0.6";
bgObj.style.left
="0";
bgObj.style.width
=sWidth + "px";
bgObj.style.height
=sHeight*2 + "px";
bgObj.style.zIndex 
= "10000";
document.body.appendChild(bgObj);
//在body内添加该div对象


var msgObj=document.createElement("div")//创建一个div对象(提示框层)
//
定义div属性,即相当于
//

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 
= "20%";
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");//创建一个h4对象(提示框标题栏)
//
定义h4的属性,即相当于
//
关闭
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
=removeObj;

var button=document.createElement("input");//创建一个input对象(提示框按钮)
//
定义input的属性,即相当于
//

button.setAttribute("type","button");
button.setAttribute(
"value","关闭");
button.style.width
="60px";
button.style.align
="center";
button.style.marginLeft
="250px";
button.style.marginBottom
="10px";
button.style.background
=bordercolor;
button.style.border
="1px solid "+ bordercolor;
button.style.color
="white";
button.onclick
=removeObj;

function removeObj(){//点击标题栏触发的事件
document.body.removeChild(bgObj);//删除背景层Div
document.getElementById("msgDiv").removeChild(title);//删除提示框的标题栏
document.body.removeChild(msgObj);//删除提示框层
}

document.body.appendChild(msgObj);
//在body内添加提示框div对象msgObj
document.getElementById("msgDiv").appendChild(title);//在提示框div中添加标题栏对象title

var txt=document.createElement("p");//创建一个p对象(提示框提示信息)
//
定义p的属性,即相当于
//
测试效果


txt.style.margin="1em 0"
txt.setAttribute(
"id","msgTxt");
txt.innerHTML
=""+str+">";//来源于函数调用时的参数值
document.getElementById("msgDiv").appendChild(txt);//在提示框div中添加提示信息对象txt
document.getElementById("msgDiv").appendChild(button);//在提示框div中添加按钮对象button
}


script >
head >

< body >
< onclick ="sAlert('logo.png','登录');" > 登陆 p >
body >
html >

 

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