var x = 0;
var y = 0;
var mb = dojo.marginBox(itm.lblNode);
if(this.labelEdge == this.EDGE.TOP){
x = Math.round((itm.sizeW/ 2) - (mb.w/|> 2));
y = -mb.h;
}if(this.labelEdge == this.EDGE.BOTTOM){
x = Math.round((itm.sizeW/ 2) - (mb.w/|> 2));
y = itm.sizeH;
}if(this.labelEdge == this.EDGE.LEFT){
x = -mb.w;
y = Math.round((itm.sizeH/ 2) - (mb.h/|> 2));
}if(this.labelEdge == this.EDGE.RIGHT){
x = itm.sizeW;
y = Math.round((itm.sizeH/ 2) - (mb.h/|> 2));
}
itm.lblNode.style.left = x + 'px';
itm.lblNode.style.top = y + 'px';