var tab = {
    init: function(){
        var tabs = this.setup.tabs;
        var pages = this.setup.pages;
        for(i=0; i<pages.length; i++) {
            if(i !== 0) pages[i].style.display = 'none';
            tabs[i].onclick = function(){ tab.showpage(this); return false; };
        }
    },
    showpage: function(obj){
        var tabs = this.setup.tabs;
        var pages = this.setup.pages;
        var num;
        for(num=0; num<tabs.length; num++) {
            if(tabs[num] === obj) break;
        }
        for(var i=0; i<pages.length; i++) {
            if(i == num) {
                pages[num].style.display = 'block';
                tabs[num].className = 'present';
            }else{
                pages[i].style.display = 'none';
                tabs[i].className = null;
            }
        }
    }
}

function ichg(imgselect,sHref) {
    switch(imgselect){
        case 1: buf=document.images.ichg1; break
        case 2: buf=document.images.ichg2; break
        case 3: buf=document.images.ichg3; break
        case 4: buf=document.images.ichg4; break
        case 5: buf=document.images.ichg5; break
        case 6: buf=document.images.ichg6; break
        case 7: buf=document.images.ichg7; break
        case 8: buf=document.images.ichg8; break
        case 9: buf=document.images.ichg9; break
    }
    if (document.all) {
        buf.style.filter="blendTrans(duration=0)";
        buf.filters.blendTrans.Apply();
    }
    buf.src = sHref;
    if (document.all) {
        buf.filters.blendTrans.Play();
    }
}