/* 
------------------------------------------
	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 flipBoxRes(who) {
	var tmp; 
	if (document.getElementById('box_small_' + who).style.display == 'block') { 
		document.getElementById('box_small_' + who).style.display = 'none';
		document.getElementById('box_big_' + who).style.display = 'block';
	} else { 
		document.getElementById('box_small_' + who).style.display = 'block';
		document.getElementById('box_big_' + who).style.display = 'none';
	} 
}

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';
}

/* Динамическое создание списка */

function getOptions(form, first, second, submit_frame, src)
{
	second.disabled = true;
	src += '?form='+form.name + '&special=' + second.name + '&facult=' + first.options[first.selectedIndex].value;
	submit_frame.src = src;
	return;
}

function setOptionsLeave(select, arr)
{
	setOptions(select, arr, 1);
}

function setOptions(select, arr, leave)
{
    select.length = leave ? leave : 0;
	for (i = 0; i < arr.length; i++) {
		select.options[select.length] = new Option(arr[i][1], arr[i][0], false, false);
	}
	select.selectedIndex = 0;
	select.disabled = false;
	return;
}

function browseIt()
{
	this.ver=navigator.appVersion;
	this.agent=navigator.userAgent;
	this.dom=document.getElementById?1:0;
	this.opera=(navigator.userAgent.indexOf("Opera")>-1 && document.getElementById)?1:0;
	this.opera6 = (this.opera && parseInt(navigator.appVersion) <7);
	this.opera7 = (this.opera && parseInt(navigator.appVersion) >= 7);
	this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom && !this.opera)?1:0;
	this.ie6=(this.ver.indexOf("MSIE 6")>-1 && this.dom && !this.opera)?1:0;
	this.ie4=(document.all && !this.dom && !this.opera)?1:0;
	this.ie=this.ie4||this.ie5||this.ie6;
	this.mac=this.agent.indexOf("Mac")>-1;
	this.ns6=(this.dom && parseInt(this.ver) >= 5) ?1:0;
	this.ns4=(document.layers && !this.dom)?1:0;
	this.moz=(this.agent.indexOf("Gecko")>-1 || window.sidebar)
	this.b=(this.ie || this.ie6 || this.ie5 || this.ns6 || this.opera7 || this.ns4 || this.mac || this.moz || this.dom);
	return this;
}