html遮罩点击 点击按钮实现遮罩效果

New Document

//more javascript from

function sAlert(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="#c51100";//提示窗口的边框颜色

titlecolor="#c51100";//提示窗口的标题颜色

var sWidth,sHeight;

sWidth=screen.width;

sHeight=screen.height;

var bgObj=document.createElement("div");

bgObj.setAttribute('id','bgDiv');

bgObj.style.position="absolute";

bgObj.style.top="0";

bgObj.style.background="#cccccc";

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.οnclick=function(){

document.body.removeChild(bgObj);

document.getElementById("msgDiv").removeChild(title);

document.body.removeChild(msgObj);

window.location.reload();

window.location="#";

c.innerText="aaaaaaaaaa";

}

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);

}

//在按钮中添加事件