Drag and Drop In as3 flash

gistfile1.txt

stop();
var startX:Number;
var startY:Number;
drag_1.addEventListener(MouseEvent.MOUSE_DOWN,m_d);
drag_2.addEventListener(MouseEvent.MOUSE_DOWN,m_d);
drag_3.addEventListener(MouseEvent.MOUSE_DOWN,m_d);
drag_4.addEventListener(MouseEvent.MOUSE_DOWN,m_d);

drag_1.addEventListener(MouseEvent.MOUSE_UP,m_u_1);
drag_2.addEventListener(MouseEvent.MOUSE_UP,m_u_2);
drag_3.addEventListener(MouseEvent.MOUSE_UP,m_u_3);
drag_4.addEventListener(MouseEvent.MOUSE_UP,m_u_4);

function m_d(e:Event) {
	e.target.startDrag();
	startX = e.target.x;
	startY = e.target.y;
}
function m_u_1(e:Event) {
	drag_1.removeEventListener(MouseEvent.MOUSE_DOWN,m_d);

	e.target.stopDrag();
	if (drag_1.dropTarget != null && drag_1.dropTarget.parent==drop_4  || drag_1.dropTarget != null && drag_1.dropTarget.parent==drop_3|| drag_1.dropTarget != null && drag_1.dropTarget.parent==drop_2 || drag_1.dropTarget != null && drag_1.dropTarget.parent==drop_1) {
		trace("RRRRRRRRRRRRRRRRRRRR");
		drag_1.x=e.target.x;
		drag_1.y=e.target.y;
	} else {
		trace("wwwwwwwwwwwwwwww");
		e.target.x = startX;
		e.target.y = startY;
	}
}
function m_u_2(e:Event) {
	drag_2.removeEventListener(MouseEvent.MOUSE_DOWN,m_d);
	e.target.stopDrag();
	if (drag_2.dropTarget != null && drag_2.dropTarget.parent==drop_4  || drag_2.dropTarget != null && drag_2.dropTarget.parent==drop_3|| drag_2.dropTarget != null && drag_2.dropTarget.parent==drop_2 || drag_2.dropTarget != null && drag_2.dropTarget.parent==drop_1) {
		trace("RRRRRRRRRRRRRRRRRRRR");
		drag_2.x=e.target.x;
		drag_2.y=e.target.y;
	} else {
		trace("wwwwwwwwwwwwwwww");
		e.target.x = startX;
		e.target.y = startY;
	}
}
function m_u_3(e:Event) {
	drag_3.removeEventListener(MouseEvent.MOUSE_DOWN,m_d);
	e.target.stopDrag();
	if (drag_3.dropTarget != null && drag_3.dropTarget.parent==drop_4  || drag_3.dropTarget != null && drag_3.dropTarget.parent==drop_3|| drag_3.dropTarget != null && drag_3.dropTarget.parent==drop_2 || drag_3.dropTarget != null && drag_3.dropTarget.parent==drop_1) {
		trace("RRRRRRRRRRRRRRRRRRRR");
		drag_3.x=e.target.x;
		drag_3.y=e.target.y;
	} else {
		trace("wwwwwwwwwwwwwwww");
		e.target.x = startX;
		e.target.y = startY;
	}
}
function m_u_4(e:Event) {
	drag_4.removeEventListener(MouseEvent.MOUSE_DOWN,m_d);
	e.target.stopDrag();
	if (drag_4.dropTarget != null && drag_4.dropTarget.parent==drop_4  || drag_4.dropTarget != null && drag_4.dropTarget.parent==drop_3|| drag_4.dropTarget != null && drag_4.dropTarget.parent==drop_2 || drag_4.dropTarget != null && drag_4.dropTarget.parent==drop_1) {
		trace("RRRRRRRRRRRRRRRRRRRR");
		drag_4.x=e.target.x;
		drag_4.y=e.target.y;
	} else {
		trace("wwwwwwwwwwwwwwww");
		e.target.x = startX;
		e.target.y = startY;
	}
}

submit.addEventListener(MouseEvent.MOUSE_UP,m_submit);

function m_submit(e:Event){
	
	if (drag_1.dropTarget != null && drag_1.dropTarget.parent==drop_2){
		trace("----RR-----drag_1-------RR-------");
	}else{
		trace("----WW-----drop_1-------WW-------");
		
	}
	if (drag_2.dropTarget != null && drag_2.dropTarget.parent==drop_4){
		trace("----RR-----drag_2-------RR-------");
	}else{
		trace("----WW-----drop_2-------WW-------");
		
	}
	if (drag_3.dropTarget != null && drag_3.dropTarget.parent==drop_1){
		trace("----RR-----drag_3-------RR-------");
	}else{
		trace("----WW-----drop_3-------WW-------");
		
	}
	if (drag_4.dropTarget != null && drag_4.dropTarget.parent==drop_3){
		trace("----RR-----drag_4-------RR-------");
	}else{
		trace("----WW-----drop_4-------WW-------");
		
	}
	
}