// »õ±ÒÇл»
function getCurrency(cur){
    var args = new Object();
    var query = location.search.substring(1);
    query=query.substring(query.length-1,query.length)=="#"?query.substring(1,query.length-1):query;
    var pairs = query.split("&");
    var param="";
    var curflag=false;
    for(var i = 0; i < pairs.length; i++) {
        var pos = pairs[i].indexOf('=');
        if (pos == -1) continue;
        var argname = pairs[i].substring(0,pos);
        var value = pairs[i].substring(pos+1);
	if(argname!='currency'){
		args[argname] = value;
		param=param.length>0?param+'&'+argname+'='+value:param+argname+'='+value;
	}else{
		args[argname] =cur;
		param=param.length>0?param+'&'+argname+'='+cur:param+argname+'='+cur;
		curflag=true;
	}
    }
   param=curflag?param:param.length>0?param+'&currency='+cur:'currency='+cur;

   var url=location.href.split('?')[0];
   location.href=url+'?'+param;
}