var spl_num=1;
var num=1;
var hov_ident=0;
var t,t2,obj,op; 
var cm=0;     // ??? ??????????? ????????? 
	 
	function appear(x)   // x - ???????? ???????? ???????????? 
	{
	    op = (obj.style.opacity)?parseFloat(obj.style.opacity):parseInt(obj.style.filter)/100; 
	     
	    if(op < x)  
	    { 
	        clearTimeout(t2); 
	        op += 0.05; 
	        cm.innerHTML = Math.round(op*10)/10*100+'%'; // ??????????? ????????? 
	        obj.style.opacity = op; 
	        obj.style.filter='alpha(opacity='+op*100+')'; 
	        t=setTimeout('appear('+x+')',20); 
	    }
		else {
			dis_time=setTimeout('disappear(0)',5000);
		};
	} 
	 
	function disappear(x) 
	{ 
	    op = (obj.style.opacity)?parseFloat(obj.style.opacity):parseInt(obj.style.filter)/100; 
	     
	    if(op > x)  
	    { 
	        clearTimeout(t); 
	        op -= 0.05; 
	        cm.innerHTML = Math.round(op*10)/10*100+'%'; // ??????????? ????????? 
	        obj.style.opacity = op; 
	        obj.style.filter='alpha(opacity='+op*100+')'; 
	        t2=setTimeout('disappear('+x+')',20); 
	    }
		else {
			blocks_random();
		};
	}
	function blocks_random() {
			if(spl_num>3) spl_num=1;
			if(spl_num==1) {
							hov_ident=1;
							document.getElementById('but_cr').src="images/but_create_on.jpg";
							document.getElementById('but_se').src="images/but_send.jpg";
							document.getElementById('but_tr').src="images/but_track.jpg";
							
							document.getElementById('block2').style.display='none';
							document.getElementById('block3').style.display='none';
							document.getElementById('block1').style.display='block';
							
							obj=document.getElementById('ran_block_inside1')
						  };
			if(spl_num==2) {
							hov_ident=2;
							document.getElementById('but_cr').src="images/but_create.jpg";
							document.getElementById('but_se').src="images/but_send_on.jpg";
							document.getElementById('but_tr').src="images/but_track.jpg";
							
							document.getElementById('block1').style.display='none';
							document.getElementById('block3').style.display='none';
							document.getElementById('block2').style.display='block';
							
							obj=document.getElementById('ran_block_inside2')
						  };
			if(spl_num==3) {
							hov_ident=3;
							document.getElementById('but_cr').src="images/but_create.jpg";
							document.getElementById('but_se').src="images/but_send.jpg";
							document.getElementById('but_tr').src="images/but_track_on.jpg";
							
							document.getElementById('block1').style.display='none';
							document.getElementById('block2').style.display='none';
							document.getElementById('block3').style.display='block';
							
							obj=document.getElementById('ran_block_inside3')
						  };
			spl_num++;	
			appear(1);
		}