var currslid = 1;

function showDiv(obj,num,len)

{

for(var id = 1;id<=len;id++)

{

  var ss=obj+id;

  var snav =obj+"nav"+id;

  if(id==num){

    try{document.getElementById(ss).style.display="block"}catch(e){};

    try{document.getElementById(snav).className="active"}catch(e){};

  }else{

    try{document.getElementById(ss).style.display="none"}catch(e){};

    try{document.getElementById(snav).className=""}catch(e){};

  }

}  

}

function showFocus(num)

{

for(var id = 1;id<=4;id++)

{

    currslid = num;

  var fpid="focusPic"+id;

  var fcid="focusContent"+id;

  var fnid="focusnav"+id;

  if(id==num){

      try{document.getElementById(fpid).style.display="block"}catch(e){};

    try{document.getElementById(fcid).style.display="block"}catch(e){};

    try{document.getElementById(fnid).className="active"}catch(e){};

  }else{

    try{document.getElementById(fpid).style.display="none"}catch(e){};

    try{document.getElementById(fcid).style.display="none"}catch(e){};

    try{document.getElementById(fnid).className=""}catch(e){};

  }

}  

}

function playnext(){

    if(currslid==4){

        currslid = 1;

    }

    else{

        currslid++;

    };

    showFocus(currslid);

    playit();

}

function playit(){

    slidint = setTimeout(playnext,6000);

}

function stopit(){

    clearTimeout(slidint);

    }

window.onload = function(){

    playit();

}