var sliderIntervalId = 0;
var sliderHeight = 0;
var sliderHeight2 = 0;
var sliding = false;
var slideSpeed = 10;

function Slide(){
   
   if(sliding)
      return;
   sliding = true;
   if(sliderHeight >= 232)
      sliderIntervalId = setInterval('SlideUpRun()', 30);
   else
      sliderIntervalId = setInterval('SlideDownRun()', 30);
}

function SlideUpRun(){
   slider = document.getElementById('exampleSlider');
   if(sliderHeight <= 0)
   {
      sliding = false;
      sliderHeight = 0;
      slider.style.height = '0px';
      clearInterval(sliderIntervalId);
   }
   else
   {
      sliderHeight -= slideSpeed;
      if(sliderHeight < 0)
         sliderHeight = 0;
      slider.style.height = sliderHeight + 'px';
   }
}

function SlideDownRun(){
   slider = document.getElementById('exampleSlider');
   slider2 = document.getElementById('exampleSlider2');
   
   slider.style.visibility="visible";
   
   if(sliderHeight >= 1500)
   {
      sliding = false;
      sliderHeight = 1500;
      slider.style.height = '1500px';
   
      sliding = false;
      sliderHeight2 = 1500;
      slider2.style.height = '1500px';
      clearInterval(sliderIntervalId);   
   
   
   }
   else
   {
      sliderHeight += slideSpeed;
      if(sliderHeight > 1500)
         sliderHeight = 1500;
      slider.style.height = sliderHeight + 'px';
   
      sliderHeight2 += slideSpeed;
      if(sliderHeight2 > 1500)
         sliderHeight2 = 1500;
      slider2.style.height = sliderHeight2 + 'px';   
   
   
   }
}