// 滚动条
function marquee_go(marquee_name,marquee_spd)
{
var obj_marquee1 = document.getElementById(marquee_name);
var repeat = null;
//var marquee_spd = 50;

marquee_init(obj_marquee1);
repeat = setInterval("marquee_doit('"+marquee_name+"')",marquee_spd);
obj_marquee1.onmouseover = function() {clearInterval(repeat);}
obj_marquee1.onmouseout = function() {repeat=setInterval("marquee_doit('"+marquee_name+"')",marquee_spd);}
}

function marquee_init(obj_marquee) {
var obj_unit = obj_marquee.firstChild;
var marquee_high = parseInt(obj_marquee.style.height);
var marquee_wide = parseInt(obj_marquee.style.width);
var unit_high = obj_unit.offsetHeight;
var unit_wide = obj_unit.offsetWidth;
var m = 0, n = 0, i = 0;
var tmp = null;
m = Math.ceil(marquee_wide / unit_wide);
n = Math.ceil(marquee_high / unit_high);
obj_unit.style.width = marquee_wide * (m+1);
obj_unit.rows[0].cells[0].style.width = obj_marquee.style.width;
for(i=0; i<m; i++) {
tmp = obj_unit.rows[0].insertCell(-1);
tmp.innerHTML = obj_unit.rows[0].cells[0].innerHTML;
tmp.style.width = marquee_wide;
tmp = null;
}
for(i=0; i<n; i++) {
obj_marquee.appendChild(obj_unit.cloneNode(true));
}
return;
}

function marquee_show(direction,obj_marquee) {
switch(direction) {
case "up":
if(obj_marquee.scrollTop >= obj_marquee.children[1].offsetTop) {
obj_marquee.scrollTop -= obj_marquee.firstChild.offsetHeight;
} else {
obj_marquee.scrollTop++;
}
break;
case "down":
if(obj_marquee.scrollTop <= 0) {
obj_marquee.scrollTop += obj_marquee.firstChild.offsetHeight;
} else {
obj_marquee.scrollTop--;
}
break;
case "left":
if(obj_marquee.scrollLeft >= obj_marquee.firstChild.rows[0].cells[0].offsetWidth) {
obj_marquee.scrollLeft -= obj_marquee.firstChild.rows[0].cells[0].offsetWidth;
} else {
obj_marquee.scrollLeft++;
}
break;
case "right":
if(obj_marquee.scrollLeft <= 0) {
obj_marquee.scrollLeft += obj_marquee.firstChild.rows[0].cells[0].offsetWidth;
} else {
obj_marquee.scrollLeft--;
}
break;
default:
break;
}
return;
}
function marquee_doit(marquee_name) {
var obj_marquee = document.getElementById(marquee_name);
var direction = "";
direction = obj_marquee.getAttribute("direction");
if(direction != null) marquee_show(direction,obj_marquee);
direction = obj_marquee.getAttribute("direction2");
if(direction != null) marquee_show(direction,obj_marquee);
return;
}