var divUp=null;
	var divUpMooving=null;
	function toggleDropdown(divID){	
		//target is moving  up?
		if(divUpMooving==divID){return;}		
		//target is already up?
		if(divUp==divID){
			divUp=null;
			slideDown(divID); return;}
		//someone else is moving up?
		if(divUpMooving!=divID && divUpMooving!=null){
			$("#nabidka"+divUpMooving).stop();
			slideDown(divUpMooving);			
			divUpMooving=divID;
			slideUp(divUpMooving); return;}			
		//someone else is up?
		if(divUp!=divID && divUp!=null){
			slideDown(divUp);			
			divUp=null;
			divUpMooving=divID;
			slideUp(divUpMooving); return;}	
		//nothings up
		if(divUp==null && divUpMooving==null){
			divUpMooving=divID;
			slideUp(divUpMooving);
			animace=document.getElementById("animace");
			animace.stop(); return;}	
	}
	function slideDown(divID){
		downTarget=document.getElementById("nabidka"+divID);
		newHeight=1;
		newTop=1;
		$("#nabidka"+divID).animate({ 
			height: newHeight+"px",
			top: newTop+"px"
		}, 500, function(){ downTarget.className="nb-plane packed"; if(divUp==null && divUpMooving==null){animace.go();} })
	}
	function slideUp(divID){
		upTarget=document.getElementById("nabidka"+divID);
		if(upTarget.className=="nb-plane packed"){
			upTarget.className="nb-plane unpacked";
			upTarget.style.height="1px";
			upTarget.style.top="1px";
		}
		newHeight=400;
		newTop=-400;
		$("#nabidka"+divID).animate({ 
			height: newHeight+"px",
			top: newTop+"px"
		}, 500, function(){ divUp=divID; divUpMooving=null; })
	}