var pictrueNo=0;
function change(){
	if(pause1){
		var iTimeoutID = setTimeout('change()', 5000);
		return;};
	if(pictrueNo<2){
		return;}
    for(var i=1;i<=pictrueNo;){
        if(document.getElementById("pic"+i).style.display != "none"){
		    fuwei();
		    if(i<pictrueNo)
		    {
		        var tem=i+1;
		        document.getElementById("s"+tem).className="now";
		        document.getElementById("pic"+tem).style.display="block";
		        document.getElementById("t"+tem).style.display="block";
		        document.getElementById("desc"+tem).style.display="block";
		    }
		    else
		    {
		        document.getElementById("s1").className="now";
		        document.getElementById("pic1").style.display="block";
		        document.getElementById("t1").style.display="block";
		        document.getElementById("desc1").style.display="block";
		    }
	        var iTimeoutID = setTimeout('change()', 5000);
		        return;
		}
		i=i+1;
	}

}

                                              
function sd(num){
	fuwei();
	document.getElementById("s"+num).className="now";
	document.getElementById("pic"+num).style.display="block";
	document.getElementById("t"+num).style.display="block";
	document.getElementById("desc"+num).style.display="block";
}

function fuwei(){
    for(var i=1;i<=pictrueNo;){
        document.getElementById("s"+i).className="";
        document.getElementById("pic"+i).style.display="none";
	    document.getElementById("t"+i).style.display="none";
	    document.getElementById("desc"+i).style.display="none";
		i=i+1;
    }


}

var pause1 = false;