var postform_fN = function callBack(o) { 
 var result_div = document.getElementById(o.argument.MyTargetDIV);
 result_div.innerHTML=o.responseText;
}

function suwich_postForm(target,formName,up,TargetDIV) {
  var callback_suwichpostForm = { success:postform_fN, upload:postform_fN, argument: {MyTargetDIV: TargetDIV} }

  YAHOO.util.Connect.setForm(formName,up);
  YAHOO.util.Connect.asyncRequest('POST',target,callback_suwichpostForm);

  var result_div = document.getElementById(TargetDIV);
  result_div.innerHTML = "<IMG SRC=\"images/icons/loading.gif\"/>";
}