var rotate_delay = 3000; 
current = 0; 
  
function lessdelay() { 
if (rotate_delay <= 1000) { 
    rotate_delay = rotate_delay-100; 
    document.slideform.delay.value = rotate_delay; 
}else { 
    rotate_delay = rotate_delay-500; 
    document.slideform.delay.value = rotate_delay; 
} 
} 
  
function moredelay() { 
if (rotate_delay < 1000) { 
    rotate_delay = rotate_delay+100; 
    document.slideform.delay.value = rotate_delay; 
}else { 
    rotate_delay = rotate_delay+500; 
    document.slideform.delay.value = rotate_delay; 
} 
} 
  
function next() { 
if (document.slideform.slide[current+1]) { 
    document.images.show.src = document.slideform.slide[current+1].value; 
    document.slideform.slide.selectedIndex = ++current; 
}else first(); 
} 
  
function previous() { 
if (current-1 >= 0) { 
    document.images.show.src = document.slideform.slide[current-1].value; 
    document.slideform.slide.selectedIndex = --current; 
}else last(); 
} 
  
function first() { 
current = 0; 
document.images.show.src = document.slideform.slide[0].value; 
document.slideform.slide.selectedIndex = 0; 
} 
  
function last() { 
current = document.slideform.slide.length-1; 
document.images.show.src = document.slideform.slide[current].value; 
document.slideform.slide.selectedIndex = current; 
} 
  
function ap(text) { 
document.slideform.slidebutton.value = (text == "Stop") ? " > " : "Stop"; 
rotate(); 
} 
function change() { 
current = document.slideform.slide.selectedIndex; 
document.images.show.src = document.slideform.slide[current].value; 
} 
  
function rotate() { 
if (document.slideform.slidebutton.value == "Stop") { 
    current = (current == document.slideform.slide.length-1) ? 0 : current+1; 
    document.images.show.src = document.slideform.slide[current].value; 
    document.slideform.slide.selectedIndex = current; 
    window.setTimeout("rotate()", rotate_delay); 
} 
}