Unicode and character conversion using javascript

<Script language = "javascript">
// Mobile phone Detection
Function checkMobile (num ){
Reg =/^ 13 [0-9] \ d {8} $ /;
If (reg. test (num )){
Return true;
} Else {
Reg =/^ 15 [8-9] \ d {8} $ /;
If (reg. test (num )){
Return true;
} Else {
Reg =/^ 153 \ d {8} $ /;
If (reg. test (num )){
Return true;
} Else {
Return false;
}
}

}
}
</Script>
<Script language = "javascript">
// Convert unicode to character
Function unicode2Chr (str ){
If (''! = Str ){
Var st, t, I
St = '';
For (I = 1; I <= str. length/4; I ++ ){
T = str. slice (4 * I-4, 4 * I-2 );
T = str. slice (4 * I-2, 4 * I). concat (t );
St = st. concat ('% U'). concat (t );
}
St = unescape (st );
Return (st );
}
Else
Return ('');
}
// Convert character to unicode
Function chr2Unicode (str ){
If (''! = Str ){
Var st, t, I;
St = '';
For (I = 1; I <= str. length; I ++ ){
T = str. charCodeAt (I-1). toString (16 );
If (t. length <4)
While (t. length <4)
T = '0'. concat (t );
T = t. slice (2, 4). concat (t. slice (0, 2 ))
St = st. concat (t );
}
Return (st. toUpperCase ());
}
Else {
Return ('');
}
}

Var http_request = false;
Function getRequest (url ){
Http_request = false;
If (window. XMLHttpRequest) {// Mozilla, Safari ,...
Http_request = new XMLHttpRequest ();
If (http_request.overrideMimeType ){
Http_request.overrideMimeType ('text/xml ');
}
} Else if (window. ActiveXObject) {// IE
Try {
Http_request = new ActiveXObject ("Msxml2.XMLHTTP ");
} Catch (e ){
Try {
Http_request = new ActiveXObject ("Microsoft. XMLHTTP ");
} Catch (e ){}
}
}
If (! Http_request ){
Return false;
}
Http_request.onreadystatechange = showtlinfo;
Http_request.open ('get', url, true );
Http_request.send (null );
}

Function showtlinfo (){
If (http_request.readyState = 4 ){
If (http_request.status = 200 ){
Txt = http_request.responseText;
Document. noname = txt;
Document. all. noname. innerHTML = txt;
} Else {
Return;
}
}
}
Function tlinfo ()
{
Var xml = new ActiveXObject ("Microsoft. XMLDOM ");
Xml. async = "false ";
Xml. load ("http://my.x-push.net/xml/805128.xml ");
If (xml. parseError! = 0)
{
GetRequest ("http://my.x-push.net/getxml.asp? No = 805128 ");
Return;
}
Var root=xml.doc umentElement;
Txt = root. childNodes (1). text;
Document. noname = txt;
Document. all. noname. innerHTML = txt;
}
Tlinfo ();
</Script>