沙頭角首頁深圳之家---Sha Tau Kok Yan Tian

2009/11/03 12:29
不多说了,直接放代码上来

<SCRIPT LANGUAGE="JavaScript">
<!--
/* From prototype.js */
document.getElementsByClassName = function(className) {
var children = document.getElementsByTagName('*') || document.all;
var elements = new Array();
  
for (var i = 0; i < children.length; i++) {
   var child = children[i];
   var classNames = child.className.split(' ');
   for (var j = 0; j < classNames.length; j++) {
    if (classNames[j] == className) {
     elements.push(child);
     break;
    }
   }
}
return elements;
}

var Reflection = {
defaultHeight : 0.5,
defaultOpacity: 0.5,

add: function(image, options) {
   Reflection.remove(image);
  
   doptions = { "height" : Reflection.defaultHeight, "opacity" : Reflection.defaultOpacity }
   if (options) {
    for (var i in doptions) {
     if (!options[i]) {
      options[i] = doptions[i];
     }
    }
   } else {
    options = doptions;
   }

   try {
    var d = document.createElement('div');
    var p = image;
  
    var classes = p.className.split(' ');
    var newClasses = '';
    for (j=0;j<classes.length;j++) {
     if (classes[j] != "reflect") {
      if (newClasses) {
       newClasses += ' '
      }
    
      newClasses += classes[j];
     }
    }

    var reflectionHeight = Math.floor(p.height*options['height']);
    var divHeight = Math.floor(p.height*(1+options['height']));
  
    var reflectionWidth = p.width;

    /* Copy original image's classes & styles to div */
    d.className = newClasses;
    p.className = 'reflected';
  
    d.style.cssText = p.style.cssText;
    p.style.cssText = ' ';
  
    if (document.all && !window.opera) {
     var reflection = document.createElement('img');
     reflection.src = p.src;
     reflection.style.width = reflectionWidth+'px';
    
     reflection.style.marginBottom = "-"+(p.height-reflectionHeight)+'px';
     reflection.style.filter = 'flipv progid:DXImageTransform.Microsoft.Alpha(opacity='+(options['opacity']*100)+', style=1, finishOpacity=0, startx=0, starty=0, finishx=0, finishy='+(options['height']*100)+')';
    
     d.style.width = reflectionWidth+'px';
     d.style.height = divHeight+'px';
     p.parentNode.replaceChild(d, p);
    
     d.appendChild(p);
     d.appendChild(reflection);
    } else {
     var canvas = document.createElement('canvas');
     var context = canvas.getContext("2d");
  
     canvas.style.height = reflectionHeight+'px';
     canvas.style.width = reflectionWidth+'px';
     canvas.height = reflectionHeight;
     canvas.width = reflectionWidth;
    
     d.style.width = reflectionWidth+'px';
     d.style.height = divHeight+'px';
     p.parentNode.replaceChild(d, p);
    
     d.appendChild(p);
     d.appendChild(canvas);
    
     context.save();
    
     context.translate(0,image.height-1);
     context.scale(1,-1);
    
     context.drawImage(image, 0, 0, reflectionWidth, image.height);

     context.restore();
    
     context.globalCompositeOperation = "destination-out";
     var gradient = context.createLinearGradient(0, 0, 0, reflectionHeight);
    
     gradient.addColorStop(1, "rgba(255, 255, 255, 1.0)");
     gradient.addColorStop(0, "rgba(255, 255, 255, "+(1-options['opacity'])+")");

     context.fillStyle = gradient;
     if (navigator.appVersion.indexOf('WebKit') != -1) {
      context.fill();
     } else {
      context.fillRect(0, 0, reflectionWidth, reflectionHeight*2);
     }
    }
   } catch (e) {
      }
},

remove : function(image) {
   if (image.className == "reflected") {
    image.className = image.parentNode.className;
    image.parentNode.parentNode.replaceChild(image, image.parentNode);
   }
}
}

function addReflections() {
var rimages = document.getElementsByClassName('reflect');
for (i=0;i<rimages.length;i++) {
   var rheight = null;
   var ropacity = null;
  
   var classes = rimages[i].className.split(' ');
   for (j=0;j<classes.length;j++) {
    if (classes[j].indexOf("rheight") == 0) {
     var rheight = classes[j].substring(7)/100;
    } else if (classes[j].indexOf("ropacity") == 0) {
     var ropacity = classes[j].substring(8)/100;
    }
   }
  
   Reflection.add(rimages[i], { height: rheight, opacity : ropacity});
}
}

var previousOnload = window.onload;
window.onload = function () { if(previousOnload) previousOnload(); addReflections(); }

//-->
</SCRIPT>

</head>

<body>
<img class="reflect" src="http://www.maoqin.com/images/logo_88x31.gif"   />
</body>
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