带进度条的关闭窗口，绝对有用！并可根据需要改写。

<% Function myloading(a)%>
<form name="loading">
      <div align="center"><center><p><input
      style="PADDING-RIGHT: 0px; PADDING-LEFT: 0px; FONT-WEIGHT: bolder; PADDING-BOTTOM: 0px; COLOR: red; BORDER-TOP-STYLE: none; PADDING-TOP: 0px; FONT-FAMILY: Arial; BORDER-RIGHT-STYLE: none; BORDER-LEFT-STYLE: none; BACKGROUND-COLOR: yellow; BORDER-BOTTOM-STYLE: none"
      size="46" name="chart"> <br>
      <input
      style="BORDER-RIGHT: medium none; BORDER-TOP: medium none; BORDER-LEFT: medium none; COLOR: rgb(138,134,134); BORDER-BOTTOM: medium none; TEXT-ALIGN: center"
      size="46" name="percent">

<script>  
var bar = 0  
var line = "||"  
var amount ="||"  
count()  
function count()
        {  
    bar= bar+2  
    amount =amount  +  line  
    document.loading.chart.value=amount  
    document.loading.percent.value=bar+"%"  
        if (bar<99)  
            {setTimeout("count()",100);}  
        else  
<%if a="closeit" then%>
            {    setTimeout("closeme();",10);  }  
<%else%>
            {    setTimeout("window.go(-1);",10);  }  
<%end if%>
        }
function closeme(){
        self.focus();
        self.close();
        return false;
    }
</script>
</p>
      </center></div>
</form>
<% End Function %>

原文转自：http://www.ltesting.net