/*
------------------------------------------
        Flipbox written by CrappoMan
        simonpatterson@dsl.pipex.com
------------------------------------------
*/
function flipBox(who) {
        var tmp;
        if (document.images['b_' + who].src.indexOf('_on') == -1) {
                tmp = document.images['b_' + who].src.replace('_off', '_on');
                document.getElementById('box_' + who).style.display = 'none';
                document.images['b_' + who].src = tmp;
        } else {
                tmp = document.images['b_' + who].src.replace('_on', '_off');
                document.getElementById('box_' + who).style.display = 'block';
                document.images['b_' + who].src = tmp;
        }
}

function addText(elname, wrap1, wrap2) {
        if (document.selection) { // for IE
                var str = document.selection.createRange().text;
                document.forms['inputform'].elements[elname].focus();
                var sel = document.selection.createRange();
                sel.text = wrap1 + str + wrap2;
                return;
        } else if ((typeof document.forms['inputform'].elements[elname].selectionStart) != 'undefined') { // for Mozilla
                var txtarea = document.forms['inputform'].elements[elname];
                var selLength = txtarea.textLength;
                var selStart = txtarea.selectionStart;
                var selEnd = txtarea.selectionEnd;
                var oldScrollTop = txtarea.scrollTop;
                //if (selEnd == 1 || selEnd == 2)
                //selEnd = selLength;
                var s1 = (txtarea.value).substring(0,selStart);
                var s2 = (txtarea.value).substring(selStart, selEnd)
                var s3 = (txtarea.value).substring(selEnd, selLength);
                txtarea.value = s1 + wrap1 + s2 + wrap2 + s3;
                txtarea.selectionStart = s1.length;
                txtarea.selectionEnd = s1.length + s2.length + wrap1.length + wrap2.length;
                txtarea.scrollTop = oldScrollTop;
                txtarea.focus();
                return;
        } else {
                insertText(elname, wrap1 + wrap2);
        }
}

function insertText(elname, what) {
        if (document.forms['inputform'].elements[elname].createTextRange) {
                document.forms['inputform'].elements[elname].focus();
                document.selection.createRange().duplicate().text = what;
        } else if ((typeof document.forms['inputform'].elements[elname].selectionStart) != 'undefined') { // for Mozilla
                var tarea = document.forms['inputform'].elements[elname];
                var selEnd = tarea.selectionEnd;
                var txtLen = tarea.value.length;
                var txtbefore = tarea.value.substring(0,selEnd);
                var txtafter =  tarea.value.substring(selEnd, txtLen);
                var oldScrollTop = tarea.scrollTop;
                tarea.value = txtbefore + what + txtafter;
                tarea.selectionStart = txtbefore.length + what.length;
                tarea.selectionEnd = txtbefore.length + what.length;
                tarea.scrollTop = oldScrollTop;
                tarea.focus();
        } else {
                document.forms['inputform'].elements[elname].value += what;
                document.forms['inputform'].elements[elname].focus();
        }
}

function show_hide(msg_id) {
        msg_id.style.display = msg_id.style.display == 'none' ? 'block' : 'none';
}

function GetXmlHttpObject()
{
 var xmlHttp = null;
 try
 {
   /* Firefox, Opera 8.0+, Safari */
   xmlHttp = new XMLHttpRequest();
 }
 catch (e)
 {
   /* Internet Explorer */
   try
   {
     xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
   }
   catch (e)
   {
     xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
   }
 }
 return xmlHttp;
}