// Place your application-specific JavaScript functions and classes here
// This file is automatically included by javascript_include_tag :defaults
function show_group(group_id){
	for(var i = 1;i < 5; i++){
		if(i == group_id){
			Effect.BlindDown('group' + i);
		}
		else{
			Effect.BlindUp('group' + i);
		}
	}
	return false;
}
onload = function(){
$('navigator').style.cursor = 'pointer';
$('navigator').onclick = function(){
		location.href='http://tdfengjing.com';
	}
}
/**********************************Utilitiy Code***************************************/
var utilities;
if(!utilities)utilities = {};
utilities.preload_image = function(){
	for(var i = 0; i < arguments.length; i++){
		var img = new Image();
		img.src = arguments[i];
	}
}
utilities.text_overflow = function(Tag,cN,Len){
    var elements = document.getElementsByTagName(Tag);
    for(i=0;i<elements.length;i++)
    {
        var element = elements[i];
        if(element.className == cN)
        {
            if(element.innerHTML.length > Len)
            {
                element.innerHTML = element.innerHTML.substring(0 ,Len-3) + "...­";
            }
        }
    }
}