var DDSPEED = 8;
var DDTIMER = 20;

// main function to handle the mouse events //
function ddMenu(id,d){
  var h = document.getElementById(id + '-ddheader');
  var c = document.getElementById(id + '-ddcontent');
  clearInterval(c.timer);
  if(d == 1){
    clearTimeout(h.timer);
    if(c.maxh && c.maxh <= c.offsetHeight){return}
    else if(!c.maxh){
      c.style.display = 'block';
      c.style.height = 'auto';
      c.maxh = c.offsetHeight;
      c.style.height = '0px';
	  //c.style.top = '165px';
	  //c.style.left = '200px';
    }
    c.timer = setInterval(function(){ddSlide(c,1)},DDTIMER);
  }else{
    h.timer = setTimeout(function(){ddCollapse(c)},50);
  }
}

// collapse the menu //
function ddCollapse(c){
  c.timer = setInterval(function(){ddSlide(c,-1)},DDTIMER);
}

// cancel the collapse if a user rolls over the dropdown //
function cancelHide(id){
  var h = document.getElementById(id + '-ddheader');
  var c = document.getElementById(id + '-ddcontent');
  clearTimeout(h.timer);
  clearInterval(c.timer);
  if(c.offsetHeight < c.maxh){
    c.timer = setInterval(function(){ddSlide(c,1)},DDTIMER);
  }
}

// incrementally expand/contract the dropdown and change the opacity //
function ddSlide(c,d){
  var currh = c.offsetHeight;
  var dist;
  if(d == 1){
    dist = (Math.round((c.maxh - currh) / DDSPEED));
  }else{
    dist = (Math.round(currh / DDSPEED));
  }
  if(dist <= 1 && d == 1){
    dist = 1;
  }
  c.style.height = currh + (dist * d) + 'px';
  c.style.opacity = currh / c.maxh;
  c.style.filter = 'alpha(opacity=' + (currh * 100 / c.maxh) + ')';
  if((currh < 2 && d != 1) || (currh > (c.maxh - 2) && d == 1)){
    clearInterval(c.timer);
  }
}

function showHover(id) {
	if (id == "whoLink") {
		var t="103px";
		var l="49px";
	}
	if (id == "powerLink") {
		var t="139px";
		var l="226px";
	}
	if (id == "speedLink") {
		var t="154px";
		var l="382px";
	}
	if (id == "multiLink") {
		var t="151px";
		var l="524px";
	}
	if (id == "turfLink") {
		var t="137px";
		var l="724px";
	}
	if (id == "contactLink") {
		var t="110px";
		var l="830px";
	}
	document.getElementById(id).style.top=t; 
	document.getElementById(id).style.left=l;
}

function hideHover(id) {
	document.getElementById(id).style.top='-999px'; 	
	document.getElementById(id).style.left='-999px'
}