var DDSPEED = 5;
var DDTIMER = 10;

// main function to handle the mouse events //
function ddMenu(id,d){
 //alert('id=' + id);
  var topValue= 0,leftValue= 0, objHgt=0;
	
	
  var obj ;
  var h = document.getElementById(id + '-ddheader');
  var c = document.getElementById(id + '-ddcontent');
  obj = h;
  while(obj){
			leftValue+= obj.offsetLeft;
			topValue+= obj.offsetTop;
			obj= obj.offsetParent;
			}
  topValue+=20;
  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 = topValue + "px";
	  c.style.left = leftValue + "px";
    }
    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);
	
  }
  if (d == -1 && currh <=5){
	c.style.display= "none";
  }
  else {
	 c.style.display= "block";
  }
  
}

function PopUpDiv(eIDpop, eIDref, offsetX, offsetY, blnModal, blnMoveWithParent) {
	//alert (eIDpop + " : " + eIDref);
	
	var topval=0,leftval=0; testtopval=0;
	var obj;
	var popID = document.getElementById(eIDpop);
	//alert('aa');
	if(eIDref=='centerWindow') {
			leftval = (window.innerWidth / 2) - (offsetX / 2);
			testtopval = ((window.innerHeight / 2) - (offsetY / 2));
			
			//alert("Height= " + document.getElementById(eIDpop).clientHeight + "px");
			if (testtopval < 5) {
					testtopval = 5;
				}
			topval = (document.body.scrollTop) + testtopval;
			//topval = (document.body.scrollTop) + 0;
			popID.style.width = offsetX + "px";
			//alert('Width='+popID.style.width);
		}
	else {
		var refID = document.getElementById(eIDref);
		
		obj = refID;
		
		//alert("ok 1");
		while(obj){
				leftval+= obj.offsetLeft;
				topval+= obj.offsetTop;
				obj= obj.offsetParent;
				}
		//alert("top val= " + topval + "px");
		//alert("offsetY= " + offsetY + "px");
		//alert("innerHeight= " + window.innerHeight + "px");
		//alert("body.scrollTop= " + (document.body.scrollTop));
		leftval = leftval + offsetX;
		topval= topval + offsetY + (document.body.scrollTop);
		//alert("New top val= " + topval + "px");
		}
	temp = document.body.scrollTop
	//alert('topval=' + topval);
	//alert('scrolltop=' + document.body.scrollTop);
	topval = topval - temp;
	//alert('New topval=' + topval);
	//alert("top val= " + topval + "px");
	
	popID.style.left = leftval + "px";
	popID.style.top = topval + "px";
	popID.style.zIndex= "1000";
	popID.style.display = "block";
	//alert('blnMoveWithParent = ' + blnMoveWithParent);
	if(blnMoveWithParent!=true) {
		popID.style.position = "fixed";
	}
	if (blnModal==true) {
		document.getElementById('mask_div').style.display = "block";
	}
}