一个貌似win窗口的载入框

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>乡下人演示</title>
</head>

var NUMBER_OF_REPETITIONS = 40;
var nRepetitions = 0;
var g_oTimer = null;

function startLongProcess()
{
   divProgressDialog.style.display = "";
   resizeModal();
   btnCancel.focus();

// Add a resize handler for the window
window.onresize = resizeModal;

// Add a warning in case anyone tries to navigate away or refresh the page
window.onbeforeunload = showWarning;

   //
   // Here's where you would normally kick off a long asynchronous process
   // like a file download or a remote database operation. Here, we use
   // our "long process" to simulate this process.
   //

continueLongProcess();
}

function updateProgress(nNewPercent)
{
   // Update our pseudo progress bar
   divProgressInner.style.width = (parseInt(divProgressOuter.style.width)
      * nNewPercent / 100)+ "px";
}

function stopLongProcess()
{
   if (g_oTimer != null)
   {
      // Clear the timer so we don't get called back an extra time
      window.clearTimeout(g_oTimer);
      g_oTimer = null;
   }

   // Hide the fake modal DIV
   divModal.style.width = "0px";
   divModal.style.height = "0px";
   divProgressDialog.style.display = "none";

   // Remove our event handlers
   window.onresize = null;
   window.onbeforeunload = null;

nRepetitions = 0;
}

function continueLongProcess()
{
   if (nRepetitions < NUMBER_OF_REPETITIONS)
   {
      // Set the timeout somewhere between 0 and .25 seconds
      var nTimeoutLength = Math.random() * 250;
      updateProgress(100 * nRepetitions / NUMBER_OF_REPETITIONS);

      g_oTimer = window.setTimeout("continueLongProcess();", nTimeoutLength);
      nRepetitions++;
   }
   else
   {
      stopLongProcess();
   }
}

function showWarning()
{
//Warn users before they refresh the page or navigate away
return "Navigating to a different page or refreshing the window could cause you to lose precious data.\n\nAre you*absolutely* certain you want to do this?";
}

function resizeModal()
{
   // Resize the DIV which fakes the modality of the dialog DIV
   divModal.style.width = document.body.scrollWidth;
   divModal.style.height = document.body.scrollHeight;

   // Re-center the dialog DIV
   divProgressDialog.style.left = ((document.body.offsetWidth -
divProgressDialog.offsetWidth) / 2);
   divProgressDialog.style.top = ((document.body.offsetHeight -
divProgressDialog.offsetHeight) / 2);
}

</SCRIPT>

<div STYLE="BORDER: buttonhighlight 2px outset; FONT-SIZE: 8pt; Z-INDEX:
4; FONT-FAMILY: Tahoma; POSITION: absolute; BACKGROUND-COLOR: buttonface;
DISPLAY: none; WIDTH: 350px; CURSOR: default" ID="divProgressDialog"
onselectstart="window.event.returnValue=false;">
   <div STYLE="PADDING: 3px; FONT-WEIGHT: bolder; COLOR: captiontext;
BORDER-BOTTOM: white 2px groove; BACKGROUND-COLOR: activecaption">
      Downloading Requested Document
   </div>
   <div STYLE="PADDING: 5px">
      Please wait while I download the document you requested.
   </div>
   <div STYLE="PADDING: 5px">
      This may take several seconds.
   </div>
   <div STYLE="PADDING: 5px">
         <div ID="divProgressOuter" STYLE="BORDER: 1px solid threedshadow;
WIDTH: 336px; HEIGHT: 15px">
            <div ID="divProgressInner" STYLE="COLOR: white; TEXT-ALIGN:
center; BACKGROUND-COLOR: infobackground; MARGIN: 0px; WIDTH: 0px; HEIGHT:
13px;"></div>
         </div>
   </div>
   <div STYLE="BORDER-TOP: white 2px groove; PADDING-BOTTOM: 5px; PADDING-TOP: 3px;
BACKGROUND-COLOR: buttonface; TEXT-ALIGN: center">
         <INPUT STYLE="FONT-FAMILY: Tahoma; FONT-SIZE: 8pt" TYPE="button"
ID="btnCancel" onclick="stopLongProcess();" VALUE="Cancel">
   </div>
</div>

<div ID="divModal"
STYLE="BACKGROUND-COLOR: white; FILTER: alpha(opacity=75); LEFT: 0px; POSITION:
absolute; TOP: 0px; Z-INDEX: 3"
onclick="window.event.cancelBubble=true; window.event.returnValue=false;">
</div>

</body>
</html>

posted on 2008-12-17 11:03 草原和大树阅读(283) 评论(0) 编辑收藏举报