按钮使文字消失

下面为效果显示

脚本说明:
把如下代码加入<body>区域中
<SCRIPT language=javascript event=oninit for=Seq>
 Seq.item('ActionSet1').at(0.000, 'StretchAndDrop('+e.id+')',80, 0.010, 1);
</SCRIPT>
<SCRIPT language=javascript>
function StretchAndDrop(i) 
{
// Modify for different effect
    i.Scale(1,1.1,0);	
}
function StretchDrop() 
{
    e.SetIdentity();
    Seq.item('ActionSet1').Play();
}
</SCRIPT>
<INPUT onclick=StretchDrop() type=button value="改变字符" name=ShowEffect> 
<OBJECT id=e 
style="Z-INDEX: -1; LEFT: 0px; WIDTH: 787px; POSITION: absolute; TOP: 50px; HEIGHT: 354px; VISIBLE: " 
classid=CLSID:369303C2-D7AC-11d0-89D5-00A0C90833E6><PARAM NAME="SourceURL" VALUE="">
<PARAM NAME="CoordinateSystem" VALUE="0">
<PARAM NAME="MouseEventsEnabled" VALUE="0">
<PARAM NAME="HighQuality" VALUE="0">
<PARAM NAME="PreserveAspectRatio" VALUE="-1">
<PARAM NAME="Line0001" VALUE="SetLineColor(255,255,255)">
<PARAM NAME="Line0002" VALUE="SetFillColor(0,0,255,0,0,255)">
<PARAM NAME="Line0003" VALUE="SetFillStyle(1)">
<PARAM NAME="Line0004" VALUE="SetLineStyle(0,0)">
<PARAM NAME="Line0005" VALUE="SetFont('Verdana',20,350,0,0,0)">
<PARAM NAME="Line0006" VALUE="Text('welcome to 7stk.com,thank you!',-20,13)">
</OBJECT></CENTER>
<OBJECT id=Seq style="WIDTH: 2px; HEIGHT: 2px" classid=CLSID:B0A6BAE2-AAF0-11d0-A152-00A0C908DB96></OBJECT>