var who=new Array("topic","products","product","buy","recommendOne","reviews","recommendTwo");


var current=who[0];

var position=0;

var positionstart=0;

var positionend=0;

var time=10;

if((navigator.appName=="Netscape" && parseFloat(navigator.appVersion.substring(navigator.appVersion.indexOf('.')-1,navigator.appVersion.length))>=3)||(navigator.appName=="Microsoft Internet Explorer" && parseFloat(navigator.appVersion.substring(navigator.appVersion.indexOf('.')-1,navigator.appVersion.length))>=4)) var browserokay=true;



function jump(which){

        if(which!=current&&browserokay){

                startslide(where[seek(current)],where[seek(which)])

                /*document.images["block"+current].src=nav_block.src;

                document.images["block"+which].src=red_navi.src;*/

                current=which;

        }

}

function roll(which,way){

        if(browserokay){

                /*if(way) document.images["answer"].src=eval(which+".src");

                else document.images["answer"].src=eval(current+".src");*/

        }

}

function startslide(start,end){

        position=0;

        positionstart=start;

        positionend=end;

        slide(positionstart,positionend);

}

function slide(start,end){

        position+=(Math.max(start,end)-Math.min(start,end))/(250/time);

        if(start<end) window.scroll(right(position,start,end),0);

        else window.scroll(left(position,start,end),0);

        if(position<=Math.max(start,end)) setTimeout("slide(positionstart,positionend)",time);

}

function right(position,start,end){return -(end-start)*(Math.pow(position-end,2)/Math.pow(end,2))+end;}

function left(position,start,end){return (start-end)*(Math.pow(position-start,2)/Math.pow(start,2))+end;}

function seek(part){

        var distance=who.length;

        for(var loop=0;loop<distance;++loop) if(who[loop]==part) break;

        return loop;

}









function jumpDirect(start, position){

        if(browserokay){
               startslide(start, position)
       }

}



// -->