function do_submit(aObject) {
    var formId = "search_form";
    if (aObject == null){
        return;
    }
    var action = aObject.href;
    var formObject = document.getElementById(formId);
    if (formObject == null)
		return;
		
    var query = formObject.q.value.replace(/(^\s*)|(\s*$)/g, "");
    if (0 == action.search(/http:\/\/map.wukong.com\/search.html/)) {	//Éú»îƵµÀ
    	if (-1 == action.search(/\?.*query=/)) {
    	    if (query.length !== 0) {
    	    	aObject.href = "http://map.wukong.com/search.html?channels=poi&query=" + query;
    	    }
    	} else {
    		aObject.href = action.replace(/&?query=.*/, "&query=" + query);
    	}
    } else {
	    if (-1 == action.search(/\?.*q=/)) {
	    	aObject.href = action + "&q=" + query;
	    } else {
	    	aObject.href = action.replace(/&?q=.*/, "&q=" + query);
	    }
    }   
}