function trim(str, charlist ) {  
	charlist = !charlist ? ' \s\xA0' : charlist.replace(/([\[\]\(\)\.\?\/\*\{\}\+\$\^\:])/g, '\$1');  
  	var re = new RegExp('^[' + charlist + ']+|[' + charlist + ']+$', 'g');  
  	return str.replace(re, '');  
}  

function Ajax_UploadData(a1, a2, a3, a4) {
	
}