function cmGetMMCParams(url) {
	var x = url.indexOf('?');
	var qstring = url;
	var prms = new Array();
	var keep_prms = new Array();
	var mmc_prms = ['cm_ven=', 'cm_cat=', 'cm_pla=', 'cm_ite=', 'cm_mmc=', 'cm_mmc_o='];
	if(x>=0) {
		prms = url.substring(url.indexOf('?')+1).split('&');
		for(var i=0; i<prms.length; i++) {
			for(var k=0; k<mmc_prms.length; k++) {
				if(prms[i].indexOf(mmc_prms[k]) == 0) {
					keep_prms[keep_prms.length] = prms[i];
				}
			}
		}
		qstring = keep_prms.join('&');
	} 
	return qstring;
}

var cm_ref = document.referrer;
var cm_set_mmc = false;
var cm_mmc_params = cmGetMMCParams(document.location.href);

if(cm_mmc_params) {
	cm_set_mmc = true;
}