sendAndLoad() function is not working in IE

I have a email form in action script 2, the value will passed to jsp page using sendAndLoad(), if that email already exit a flagvalue will returned back to jsp page. it is working properly in my local machine,but after uploading to the main server it is not working in IE, but it work well in firefox…

the code is
board_mc.btn_submit.onRelease = function() {
reset_button();
this.enabled = true;
this.gotoAndStop(_down);
my_lv = new LoadVars();
recv_var = new LoadVars();
my_lv.email = board_mc.email_txt.text;
my_lv.sendAndLoad("http://serveraddress/dbconnection_flash.jsp",recv_var,“POST”);
recv_var.onLoad = function(successful) {
if (successful) {
if (this.flag != 0) {
gotoAndPlay(122);
}
else
{
board_mc.email_txt.textColor = 0xbc2226;
board_mc.email_txt.text = Email already exists;
}
}

please go through the code and help me find the error