function movement(){
	    for(az=0;az<clouds;az++){
		posx[az] += speed[az];
		document.getElementById('cld-'+az).style.backgroundPosition = posx[az].toPrecision(4)+'% '+posy[az]+'%';
		//document.getElementById('cld-'+az).innerHTML=posx[az];
		if(posx[az]>110){
		    posx[az]=Math.floor(Math.random() * (-10 - -100)) - 100;
		    posy[az]=Math.random() * (100 - 0);	    
		    speed[az]=Math.random() * (0.2 - 0.05) + 0.05;	    
		}
	    }	    
	}
	var current = 0;
	function	hello(id){
	    if(id!=0 && id!=current){
		if(current!=0){
		    $('#con'+current).fadeOut();
		}else{
		    $('#content').fadeIn(100);
		}
		$('#content').animate({marginTop: '-'+($('#con'+id).height()/2),width: $('#con'+id).width(),padding: 20,height: $('#con'+id).height() },500,function(){$('#con'+id).fadeIn()});
		current=id;
	    }else{
             $('#con'+current).fadeOut(300,function(){$('#content').animate({marginTop: 0,width: 0,height: 0,padding: 0 },300,function(){$('#content').fadeOut(300);current=0;})});
        }
	}