[linbis]

elem = Ext.getDom(id);
   elem.onmousemove	= drag;  

    function drag(e) { 
    		elem.style.top  = xy(e) + 'px';
    		elem.style.left  = xy(e,1) + 'px';
    }

function xy(e, v) { 
	if (v) {
		return value = Ext.isIE ? event.clientY + document.body.scrollTop : e.pageY;
	} else {
		return Ext.isIE ? event.clientX + document.body.scrollTop : e.pageX;
	}
}