EasyUI改变Layout的Region的宽高，位置等信息

function queryClick(e) {
$("#tr_query").show();
//主要代码
$('#mainLayout').layout('panel', 'north').panel("resize", { height: 300 });
var h = $('#mainLayout').layout('panel', 'center').panel("options").height;
var t = $('#mainLayout').layout('panel', 'center').panel("options").top;
$('#mainLayout').layout('panel', 'center').panel("resize", {
height: (h - (300 - 62)),
top: (t + (300 - 62))
});
}