jsはスペースを削除します

SCRIPT LANGUAGE="JavaScript">   
<!--   
//  :       
// Trim() , Ltrim() , RTrim()   
String.prototype.Trim = function()    
{    
return this.replace(/(^\s*)|(\s*$)/g, "");
}    
String.prototype.LTrim = function()    
{    
return this.replace(/(^\s*)/g, "");    
}    
String.prototype.RTrim = function()    
{    
return this.replace(/(\s*$)/g, "");    
}    
//-->   
</SCRIPT>   
<input type="text" value="             " id="space">   
<input type="button" value="     " onclick="javascript:document.getElementById('space').value=
document.getElementById('space').value.Trim();document.getElementById('space').select();">

<input type="button" value="    " onclick="javascript:document.getElementById('space').value=
document.getElementById('space').value.LTrim();document.getElementById('space').select();">

<input type="button" value="    " onclick="javascript:document.getElementById('space').value=
document.getElementById('space').value.RTrim();document.getElementById('space').select();">

<input type="button" value="  " onclick="javascript:document.getElementById('space').value='               ';">

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