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,  "");  
}