//搜索选择    
function chaction(){   
    type = $('#type').val();
   // alert(type); 
    switch (type){   
        case '1':   
            $('#myForm').attr('action','http://so.97xk.com/search_news.php');
            break;   
        case '2':   
            $('#myForm').attr('action','http://so.97xk.com/search_news.php');  
            break;   
        case '3': 
        	$('#myForm').attr('action','http://so.97xk.com/search_node.php');  
            break;   
        case '4':
        	$('#myForm').attr('action','http://so.97xk.com/search_user.php');    
            break;   
        case '5':
        	$('#myForm').attr('action','http://so.97xk.com/search_blog.php');   
            break;   
        default:
           $('#myForm').attr('action','http://so.97xk.com');   
    } 
}
//看看大家在做什么
function startMarquee(h,speed,delay,sid){
	var t = null;
	var p = false;
	var o = document.getElementById(sid);
	o.style.height = h+"px";
	o.innerHTML += o.innerHTML;
	o.onmouseover = function(){p = true}
	o.onmouseout = function(){p = false}
	o.scrollTop = 0;
	function start(){
		t = setInterval(scrolling, speed);
		if(!p) {
			o.scrollTop += 2;
		}
	}
	function scrolling(){
		if(p) return;
		if(o.scrollTop % h != 0){
			o.scrollTop += 2;
			if(o.scrollTop >= o.scrollHeight/2) o.scrollTop = 0;
		} else {
			clearInterval(t);
			setTimeout(start, delay);
		}
	}
	setTimeout(start, delay);
}