var isDragging = false;
var objectToDrag;
var obj;
var ecartX;
var ecartY;
var curX;
var curY;
function positionne(p_id, p_posX, p_pos_Y){
	document.getElementById(p_id).style.left = p_posX;
	document.getElementById(p_id).style.top = p_pos_Y;
}
function getPositionCurseur(e){
	//ie
	if(document.all){
		curX = event.clientX;
		curY = event.clientY;
	}
	
	//netscape 4
	if(document.layers){
		curX = e.pageX;
		curY = e.pageY;
	}
	
	//mozilla
	if(document.getElementById){
		curX = e.clientX;
		curY = e.clientY;
	}
}
function beginDrag(bloc,e){
	isDragging = true;
	objectToDrag = document.getElementById(bloc);
	getPositionCurseur(e);
	ecartX = curX - parseInt(objectToDrag.style.left);
	ecartY = curY - parseInt(objectToDrag.style.top);
}
function drag(e){
	var newPosX;
	var newPosY;
	if(isDragging == true) {
		getPositionCurseur(e);
		newPosX = curX - ecartX;
		newPosY = curY - ecartY;
		
		objectToDrag.style.left = newPosX + 'px';
		objectToDrag.style.top = newPosY + 'px';
	}
}
function endDrag(){
	isDragging = false;
}
			
		
 
	
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