function beginDrag( elementToDrag, event ) {
	//elementToDrag.style.position = "relative"
	var deltaX = event.clientX - parseInt( elementToDrag.style.left );
	var deltaY = event.clientY - parseInt( elementToDrag.style.top );
	
	if ( document.addEventListener ) {
		document.addEventListener( "mousemove", moveHandler, true );
		document.addEventListener( "mouseup", upHandler, true );
	}	else if ( document.attachEvent ) {
		document.attachEvent( "onmousemove", moveHandler );
		document.attachEvent( "onmouseup", upHandler );
	}	else {
		var oldmovehandler = document.onmousemove;
		var olduphandler = document.onmouseup;
		document.onmousemove = moveHandler;
		document.onmouseup = upHandler;
	}
	
	if ( event.stopPropagation ) event.stopPropagation();
	else event.cancelBubble = true;
	
	if ( event.preventDefault ) event.preventDefault();
	else event.returnValue = false;
	
	function moveHandler( e ) {
		if ( !e ) e = window.event;

		elementToDrag.style.left = ( e.clientX - deltaX ) + "px";
		elementToDrag.style.top = ( e.clientY - deltaY ) + "px";
		
		if ( e.stopPropagation ) e.stopPropagation();
		else e.cancelBubble = true;
	}
	
	function upHandler( e ) {
		if ( !e ) e = window.event;
		
		if ( document.removeEventListener ) {
			document.removeEventListener( "mouseup", upHandler, true );
			document.removeEventListener( "mousemove", moveHandler, true );
		}	else if ( document.detachEvent ) {
			document.detachEvent( "onmouseup", upHandler );
			document.detachEvent( "onmousemove", moveHandler );
		}	else {
			document.onmouseup = olduphandler;
			document.onmousemove = oldmovehandler;
		}
		
		if ( e.stopPropagation ) e.stopPropagation();
		else e.cancelBubble = true;
	}
}