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JavaScript Set background transparency effect code

Source: Internet
Author: User
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JavaScript Tutorial Set Background transparency effect code


<! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">


<html xmlns= "http://www.jzread.com/1999/xhtml" >


<head>


<meta http-equiv= "Content-type content=" HTML; charset=gb2312 "/>


<title>javascript Set Background transparency effect code </title>


<script language= "JavaScript" >


function correctpng ()


{


for (var i=0 i<document.images.length; i++)


 {


var img = document.images[i];


var imgname = Img.src.toUpperCase ();


if (imgname.substring (imgname.length-3, imgname.length) = = "PNG")


  {


var imgid = (img.id)? "Id= '" + img.id + "'": "";


var imgclass = (img.classname)? "Class= '" + img.classname + "'": "";


var imgtitle = (img.title)? "Title= '" + img.title + "'": "title= '" + Img.alt + "";


var imgstyle = "Display:inline-block;" + img.style.css tutorial text;


if (img.align = = "Left") Imgstyle = "float:left;" + Imgstyle;


if (img.align = = "right") Imgstyle = "float:right;" + Imgstyle;


if (img.parentElement.href) Imgstyle = "Cursor:hand;" + Imgstyle;


var strnewhtml = "<span" + imgid + imgclass + imgtitle


+ "style=" "+" width: "+ img.width +" PX; Height: "+ img.height +" px; "+ Imgstyle +"; "


+ "Filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"


+ "(src= ' + img.src +" ', sizingmethod= ' scale '); " ></span> ";


img.outerhtml = strnewhtml;


i = i-1;


  }


 }


}


function Alphabackgrounds () {


var rslt = Navigator.appVersion.match (/msie (d+.d+)/, "");


var Itsallgood = (rslt!= null && number (RSLT[1)) >= 5.5);


for (i=0 i<document.all.length; i++) {


var bg = document.all[i].currentstyle.backgroundimage;


if (BG) {


if (Bg.match (/.png/i)!= null) {


var mypng = bg.substring (5,bg.length-2);


//alert (mypng);


document.all[i].style.filter = "Progid:DXImageTransform.Microsoft.AlphaImageLoader" (src= ' +mypng+ ') sizingmethod= ' crop ');


document.all[i].style.backgroundimage = "url (')";


alert (Document.all[i].style.filter);


   }                                              


  }


 }


}


if (navigator.platform = "Win32" && navigator.appname = = "Microsoft Internet Explorer" && window.attachevent) {


window.attachevent ("onload", correctpng);


window.attachevent ("onload", alphabackgrounds);


}


 


</script>


</head>

<body>
</body>
</html>

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