taga=
[
{h:"/folder6.html",t:"История SHELL"},
{h:"/newsnav.html",t:"Новости"},
{h:"/folder6.html",t:"История SHELL"},
{h:"/folder7.html",t:"Статьи"},
{h:"/folder8.html",t:"Таблицы аналогов"},
{h:"/folder11.html",t:"Вакансии"},
{h:"/folder4.html",t:"Партнеры"},
{h:"/folder3.html",t:"Контакты"},
];


var taga;
var xyz=Array();
var num_pnt;
var za=0;
var ADA=(Math.PI / 180),ada=ADA;
var is_ie = (document.all && !window.opera);
var CT=1650,CL=450,CZ=300,_Rad=100,_cnt=8,OB=0.15,FB=8,FE=12;
var to=null;

function grad(v)
{
	return v*180/Math.PI;
}
function rad(v)
{
	return v*Math.PI/180;
}
function did(el)
{
	return document.getElementById(el);
}
function setStyles (el, styles) {
	for (var x in styles) {
		if (is_ie && x == 'opacity') {
			if (styles[x] > 0.99) el.style.removeAttribute('filter');
			else el.style.filter = 'alpha(opacity='+ (styles[x] * 100) +')';
		}
		else el.style[x] = styles[x];
	}
}

function initSphere(numpnt,radius)
{
	var x,y,z,f,t,c;
	num_pnt=numpnt;
	
	
	for(n=1;n<numpnt+1;n++){
	
		//f=Math.random()*Math.PI*2;
		//t=Math.random()*Math.PI*2;
		
		//t=0;
		//f=(2*Math.PI/numpnt)*n;
		
		f = Math.acos(-1 + ((2 * n) - 1) / numpnt); 
        t = Math.sqrt(numpnt * Math.PI) * f; 
		
	
		x = Math.round(radius*Math.cos(t)*Math.sin(f)); 
		y = Math.round(radius*Math.sin(t)*Math.sin(f));
		z = Math.round(radius*Math.cos(f));	

		xyz[n]={x:x,y:y,z:z};

		var el=document.createElement('div');
		el.id="pnt"+n;
		el.innerHTML="<a  href='"+taga[n-1].h+"'>"+taga[n-1].t+"</a>";
		el.n=n;
		el.className="sptag";
		setStyles(el,{
		left:(CL+x-el.style.width/2)+"px",top:(CT+y)+"px",zIndex:z});
		el.onmouseover = function(){mouseover(this);};
		el.onmouseout = function(){mouseout(this)};
		document.body.appendChild(el);
		
	}
	
	state=0;	
	rotateth();
}

function rotate(n,a,b,c)
{
	var x,y,z;
	x=xyz[n].x;
	y=xyz[n].y;
	z=xyz[n].z;
	
	var sa=Math.sin(a),ca=Math.cos(a),sb=Math.sin(b),cb=Math.cos(b),sc=Math.sin(c),cc=Math.cos(c);
	var ox=x,oy=y,oz=z;
	x = ox*cb*cc 		    - oy*cb*sc			  + oz*sb;
	y = ox*(cc*sa*sb+ca*sc) + oy*(ca*cc-sa*sb*sc) - oz*(cb*sa);
	z = ox*(sa*sc-ca*cc*sb) + oy*(cc*sa+ca*sb*sc) + oz*(ca*cb);		
	/*
	1 0 0       cb 0 sb       cc -sc 0
	0 ca -sa     0 1 0        sc cs  0
	0 sa  ca    -sb 0 cb      0  0   1 
	
     *//*
	ox=x;oy=y;oz=z;
	if(c!=0)//around z
	{
		x = ox*Math.cos(c)-oy*Math.sin(c);
		y = ox*Math.sin(c)+oy*Math.cos(c);
		z = z;
	} 
	ox=x;oy=y;oz=z;
	if(b!=0)//around y
	{
		x = ox*Math.cos(b)+oz*Math.sin(b);
		y = y;
		z = -ox*Math.sin(b)+oz*Math.cos(b);
	}
	ox=x;oy=y;oz=z;
	if(a!=0)//around x
	{
		x = x;
		y = oy*Math.cos(a)-oz*Math.sin(a);
		z = oy*Math.sin(a)+oz*Math.cos(a);
	}
	*/
	xyz[n]={x:x,y:y,z:z};
	var el=did("pnt"+n);
	if(el){
		x=Math.round(x);
		y=Math.round(y);
		z=Math.round(z);
		var o = (z+_Rad)/(2*_Rad);
		var fs = FB+o*FE;
		o+=OB;
		setStyles(el,{left:x+CL-el.style.width/2+"px",top:y+CT+"px",zIndex:(CZ+z)*2,fontSize: fs+"px"});
		setStyles(el,{opacity:o});
	}
}
var TMR=1000;
var state=2;//0 -idle, 1-go to
var tmr=0,ttmr=0;
var zax=0,zay=0,zaz=0;
var lto=null;

function rotateth()
{ 

	switch(state)
	{
	case 0:
		if(tmr>0)tmr--;else{ 
			ada=0.0001+ADA/2*Math.random()*((Math.random()>0.7)?1:-1);		
			tmr=TMR;
		}
		dax=day=daz=ada;
		break;
	case 1:
			ada=ADA;			
			if(tmr>=100){state=2;to=setTimeout(function(){state=0;tmr=0;ada=ADA;rotateth();},5000);return;}
			tmr++;
		break;
	}
	
	for(i=1;i<=_cnt;i++)
		rotate(i,dax,day,daz);	
		
	lto=setTimeout(function(){rotateth();},50);
}


function mouseover(el)
{
	setStyles(el,{border:'1px solid #D10000'});
	//var x,y,z,x0=Math.acos(0/_Rad),y0=Math.acos(0/_Rad),z0=Math.acos(_Rad/_Rad);//x/r=cos(phi)
	/*
		x=Math.acos(xyz[el.n].x/_Rad);
		y=Math.acos(xyz[el.n].y/_Rad);
		z=Math.acos(xyz[el.n].z/_Rad);
		dax=(-zax+(x0-x))/50;
		day=(-zay+(y0-y))/50;
		daz=(-zaz+(-z0+z))/50;
	*/
	
	var ll=(CL - parseInt(el.style.left))/_Rad, lt=(parseInt(el.style.top) - CT)/_Rad;	
	daz=0; dax=(ADA/2)*lt; day=(ADA/2)*ll;
	
	tmr=0;
	ttmr=0;	
	clearTimeout(to);clearTimeout(lto);	lto=null; to=null;
	setTimeout(function(){rotateth();},50);
	state=1;
	
	
	
	
}

function mouseout(el)
{
	setStyles(el,{border:'none'});
}

onload=function()
{
	_cnt = taga.length;
   setTimeout(function(){initSphere(_cnt,_Rad);},100);
}