function chb(src,bg){
	src.style.backgroundImage='url(/files/extern/'+bg+')';
}
function chs(obj,img){
	obj.src='/files/extern/'+img;
}
function showmbox(id){
	var box=document.getElementById('mbox'+id);
	var plus=document.getElementById('plus'+id);
	if(box.style.display=='none'){
		box.style.display='';
		plus.src='/files/extern/mines.png';
	} else {
		box.style.display='none';
		plus.src='/files/extern/plus.png';		
	}
}
// возвращает cookie если есть или undefined
function getCookie(name) {
	var matches = document.cookie.match(new RegExp(
	  "(?:^|; )" + name.replace(/([\.$?*|{}\(\)\[\]\\\/\+^])/g, '\\$1') + "=([^;]*)"
	))
	return matches ? decodeURIComponent(matches[1]) : undefined 
}

// уcтанавливает cookie
function setCookie(name, value, props) {
	props = props || {}
	var exp = props.expires
	if (typeof exp == "number" && exp) {
		var d = new Date()
		d.setTime(d.getTime() + exp*1000)
		exp = props.expires = d
	}
	if(exp && exp.toUTCString) { props.expires = exp.toUTCString() }

	value = encodeURIComponent(value)
	var updatedCookie = name + "=" + value
	for(var propName in props){
		updatedCookie += "; " + propName
		var propValue = props[propName]
		if(propValue !== true){ updatedCookie += "=" + propValue }
	}
	document.cookie = updatedCookie

}

// удаляет cookie
function deleteCookie(name) {
	setCookie(name, null, { expires: -1 })
}
/*function setCookie(name, value, expires, path, domain, secure) {
      document.cookie = name + "=" + escape(value) +
        ((expires) ? "; expires=" + expires : "") +
        ((path) ? "; path=" + path : "") +
        ((domain) ? "; domain=" + domain : "") +
        ((secure) ? "; secure" : "");
}*/
function hidePanel(type){
	if(type=='top'){
		panel=document.getElementById('toppanel');
		icon=document.getElementById('toparrow');
		if(panel.style.display==''){
			panel.style.display='none';
			icon.src='/files/extern/down.png';
			setCookie('toppanel','hidden');
		} else {
			panel.style.display='';
			icon.src='/files/extern/up.png';
			setCookie('toppanel','');
		}
	}
	if(type=='left'){
		panel=document.getElementById('leftpanel');
		icon=document.getElementById('leftarrow');
		if(panel.style.display==''){
			panel.style.display='none';
			icon.src='/files/extern/right.png';
			setCookie('leftpanel','hidden');
		} else {
			panel.style.display='';
			icon.src='/files/extern/left.png';
			setCookie('leftpanel','');
		}
		reposition();
	}
}
inArray = Array.prototype.indexOf ?
    function (arr, val) {
        return arr.indexOf(val) != -1
    } :
    function (arr, val) {
        var i = arr.length
        while (i--) {
            if (a[i] === val) return true
        }
        return false
}

function rgbToHex(R,G,B) { return toHex(R)+toHex(G)+toHex(B); }
function toHex(n) {
 n = parseInt(n,10);
 if (isNaN(n)) return "00";
 n = Math.max(0,Math.min(n,255));
 return "0123456789ABCDEF".charAt((n-n%16)/16)
      + "0123456789ABCDEF".charAt(n%16);
}
var curcoli=0;
var tcolors=Array('DBF3FF','FFFEDB','FEDBFF','DEFFDB',/*'FFE5DB',*/'EFDBFF','DBE3FF','FFECDB','FFDBEA','EFFFDB');
function getrndcolor(min,max,fix){
	if(fix==1){
		res='#'+tcolors[curcoli];		
		curcoli++;
		if (curcoli>tcolors.length) curcoli=0;
		return res;
	}
	var r=Math.floor((Math.random()*(max-min)))+min;
	var g=Math.floor((Math.random()*(max-min)))+min;
	var b=Math.floor((Math.random()*(max-min)))+min;
	return '#'+rgbToHex(r,g,b);
}
var drag=false;
var dodrag=true;
function jsmo(obj){
	if(obj.parentNode.id=='kurs') return;
	if(drag)return;
	var aleft=document.getElementById(obj.id+'al');
	var aright=document.getElementById(obj.id+'ar');
	
	var pos=seekRowCol(obj.parentNode.id);
	//if(pos.col>1 && (tbls[pos.row]==null || tbls[pos.row][pos.col-1]==null || tbls[pos.row][pos.col-1]=='')) aleft.style.display='';
	/*if(pos.col<10 && (tbls[pos.row]==null || tbls[pos.row][pos.col+1]==null || tbls[pos.row][pos.col+1]==''))*/ aright.style.display='';
	
	//var pos=getOffset(obj);
	aleft.style.left=/*pos.left-*/-7;
	aleft.style.top=/*pos.top+*/1;
	aleft.style.zIndex=2000;
	var bw=108;
	bw=obj.offsetWidth;
	bh=obj.offsetHeight;
	aright.style.left=/*pos.left+*/bw-Math.round(bw/2)-11;
	aright.style.top=/*pos.top+*/bh-8;
	aright.style.zIndex=2000;
}
function jsmo2(obj){
	var aleft=document.getElementById(obj.id+'al');
	var aright=document.getElementById(obj.id+'ar');
	aleft.style.display='none';
	aright.style.display='none';
}
function jsmm(obj,type){
	dodrag=false;
	if(type==1) obj.src='/files/extern/aright2.png';
	if(type==2) obj.src='/files/extern/aleft2.png';
}
function jsmm2(obj,type){
	dodrag=true;
	if(type==1) obj.src='/files/extern/aright.png';
	if(type==2) obj.src='/files/extern/aleft.png';
}
var
	adirection=0;
	aobj=0;
	ax=0;
	astartAt=0;
	mask=0;
	atype=0;
	aleft=0;
function jsmm3(obj,type){//type   1-right, 2-left
	var block=obj.parentNode;
	adirection=type;
	aobj=obj;
	aleft=block.offsetLeft;
	e=fixEvent(e);
	ax=e.pageX;
	if(block.parentNode.id=='d1') var row=1;
	if(block.parentNode.id=='d2') var row=2;
	atype=type;
	if(type==1){
		astartAt=1;
		for(i=1;i<=20;i++) if(tbls[row]!=null && tbls[row][i]==block.id){astartAt=i;break;}		
	} else {
		astartAt=10;
		for(i=20;i>=1;i--) if(tbls[row]!=null && tbls[row][i]==block.id){astartAt=i;break;}
	}
	//mask=document.getElementById('mask');
	//mask.style.display='';
	document.onmousemove = jsmm5;
	document.ondragstart = document.body.onselectstart = function() {return false}
	document.onmouseup = jsmm4;
}
function jsmm4(e){
	document.onmousemove = document.onmouseup = document.ondragstart = document.body.onselectstart = null
	//document.getElementById('mask').style.display='none';
}
function jsmm5(e){
	e = fixEvent(e)
	var block=aobj.parentNode;
	jsmo(aobj.parentNode);
	if(block.parentNode.id=='d1') var row=1;
	if(block.parentNode.id=='d2') var row=2;	
	if(atype==1){//сдвиг вправо
		xoffset=Math.floor(22/3*2);
		var npos=seekRowCol(block.parentNode.id);
		var nx=npos.col-astartAt;
	}
	if(atype==2){//сдвиг влево
		xoffset=-Math.floor(22/3*2);
		var npos=seekRowCol(block.parentNode.id);
		var nx=astartAt-npos.col;
	}
	xoffset=0;
	if(nx>3) nx=3;
	if(nx>0){
		for(i=1;i<=20;i++) if(tbls[row][i]==block.id) tbls[row][i]='';
		tbls[row][astartAt]=block.id;
		if(atype==1){
			if(nx>1 && tbls[row][astartAt+1]!='' && tbls[row][astartAt+1]!=null && tbls[row][astartAt+1]!=block.id) nx=1;
			if(nx>2 && tbls[row][astartAt+2]!='' && tbls[row][astartAt+2]!=null && tbls[row][astartAt+2]!=block.id) nx=2;
			if(astartAt==20 && nx>1) nx=1;
			if(astartAt==19 && nx>2) nx=2;
			if(nx>=2) tbls[row][astartAt+1]=block.id;
			if(nx>=3) tbls[row][astartAt+2]=block.id;
		}
		if(atype==2){
			if(nx>1 && tbls[row][astartAt-1]!='' && tbls[row][astartAt-1]!=null && tbls[row][astartAt-1]!=block.id) nx=1;
			if(nx>2 && tbls[row][astartAt-2]!='' && tbls[row][astartAt-2]!=null && tbls[row][astartAt-2]!=block.id) nx=2;
			if(astartAt==1 && nx>1) nx=1;
			if(astartAt==2 && nx>2) nx=2;
			if(nx>=2) tbls[row][astartAt-1]=block.id;
			if(nx>=3) tbls[row][astartAt-2]=block.id;
		}
		var wb=0; var left=0;
		var xx=14;
		var ie='\v'=='v';
		if(ie)xx=xx+10;
		var yy=8;
		var pad=3;
		if(nx==1) wb=xx;
		if(nx==2){ wb=xx*2+4; left=-xx-4; pad=xx+3-4;}
		if(nx==3){ wb=xx*3+yy*2; left=-xx*2-yy*2; pad=xx*2+3-4;}
		wb=wb-pad+3;
		block.style.height=wb;
		block.style.paddingTop=pad;
		if(atype==2){
			block.style.left=aleft+left;
		}
	}	
	
	/*mask.style.left=e.pageX-5;
	mask.style.top=e.pageY-5;*/
}
function addKurs(name,clas,color,key){
	document.getElementById('kurs').innerHTML+='<div id="krs'+key+'" class="kursName" style="background-color: '+color+'" OnMouseOver="jsmo(this);" OnMouseOut="jsmo2(this);"><img src="/files/extern/aright.png" class="brarrow" id="krs'+key+'ar" style="display: none;" OnMouseOver="jsmm(this,1);" OnMouseOut="jsmm2(this,1);" OnMouseDown="jsmm3(this,1);"><img src="/files/extern/aleft.png" class="blarrow" id="krs'+key+'al" style="display: none;" OnMouseOver="jsmm(this,2);" OnMouseOut="jsmm2(this,2);" OnMouseDown="jsmm3(this,2);">'+name+'</div>';
}
function reposition(){
	if(typeof(tbls)!='undefined') for(i=1;i<=2;i++){
		if(tbls[i]!=null) for(i2=1;i2<=20;i2++){			
			if(tbls[i][i2]!=null && tbls[i][i2]!=''){
				//alert(tbls[i][i2]);
				var element=document.getElementById(tbls[i][i2]);
				var dropTarget=element.parentNode.id;
				element.style.left=getOffset(document.getElementById(dropTarget)).left+3;
				element.style.top=mlb+getOffset(document.getElementById(dropTarget)).top+(i2-1)*ew;
			}
		}
	}
}
function rebuildKurs(obj){
	var cls=obj.options[obj.selectedIndex].value;
	var limit=document.getElementById(obj.id+'2').options[document.getElementById(obj.id+'2').selectedIndex].value;
	tbls=[];
	document.getElementById('kurs').innerHTML='';
	for(i=1;i<=2;i++) document.getElementById('d'+i).innerHTML='&nbsp;';
	if(cls=='...') return;
	var min=1; var max=11;
	min=cls;
	max=cls-1+limit*2/2;
	for (var key in kurs) {
	var key1=key;
    	var ckurs = kurs[key];
		for (var key in ckurs.clas) {
		    	var cclas = ckurs.clas[key];
			if(cclas>=min && cclas<=max){ addKurs(ckurs.name,cclas,ckurs.color,key1); break;}// else if(key==0 && cclas>max) break;
		}
	}
   	var dragObjects = document.getElementById('kurs').getElementsByTagName('div')
	   for(var i=0; i<dragObjects.length; i++) {
	       new DragObject(dragObjects[i])
	}  
}
function showSelect(obj){
	var obj2=document.getElementById(obj.id+'2');
	var cls=obj.options[obj.selectedIndex].value;
	if(cls=='...'){
		obj2.style.display='none';
		obj2.selectedIndex=0;
		return;
	}
	if(cls<=8 || cls==10) obj2.style.display='';
	else obj2.style.display='none';
	obj2.selectedIndex=0;
}
function rebuildKurs2(obj){
	var obj2=document.getElementById('skurs');
	rebuildKurs(obj2);
}
function showhide(id)
{
	var e = document.getElementById(id);
	if(e===null) return '';
	if(e.style.display && e.style.display == 'none') 
	{
		e.style.display = '';
	}
	else
	{
		e.style.display = 'none';
	}
	return 0;
}