/*
var _header= document.getElementsByTagName('head')[0];
var _style = document.createElement('style');
_style.appendChild(document.createTextNode('#_maskLayer{background-color:#ffffff;width:100%;height:100%;left:0;top:0;z-index:9999999;position:absolute;display:none}#_maskiFrame{width:100%;height:100%;border:0px;}'));
_header.appendChild(_style);

var _maskLayer = document.createElement('div');
_maskLayer.id='_maskLayer';

var _maskiFrame = document.createElement('iframe');
_maskiFrame.id='_maskiFrame';

_maskLayer.appendChild(_maskiFrame);
document.body.appendChild(_maskLayer);
*/


/*参数说明: isshow:是否显示, frompage:页面来源, catid:分类ID, areaid:地区ID */
function _maskLayer_isshow(isshow, frompage, catid, areaid){
	_maskLayer.style.display = isshow?'block':'none';
	if (!isshow) return;
	if (typeof catid == 'undefined') catid = 0;
	if (typeof areaid == 'undefined') areaid = 0;
	if (typeof frompage == 'undefined') frompage = 0;
	//_maskiFrame.src='http://m.msn-04.com/msearch_middle/show/?catid='+catid+'&areaid='+areaid+'&frompage='+frompage;
	window.location.href='http://m.msn-04.com/msearch_middle/show/?catid='+catid+'&areaid='+areaid+'&frompage='+frompage;
}