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用roll.js实现的图片自动滚动+鼠标触动的特效_javascript技巧

来源：步遥情感网

代码如下:
var sh;
marqueesWidth=533;
preLeft=0; currentLeft=0; stopscroll=false; getlimit=0;preTop=0; currentTop=0;

function scrollLeft()
{
if(stopscroll==true) return;
preLeft=marquees.scrollLeft;
marquees.scrollLeft+=2;
if(preLeft==marquees.scrollLeft)
{
//marquees.scrollLeft=templayer.offsetWidth-marqueesWidth+1;
}
}

function scrollRight()
{
if(stopscroll==true) return;

preLeft=marquees.scrollLeft;
marquees.scrollLeft-=2;
if(preLeft==marquees.scrollLeft)
{
if(!getlimit)
{
marquees.scrollLeft=templayer.offsetWidth*2;
getlimit=marquees.scrollLeft;
}
marquees.scrollLeft-=1;
}
}

function Left()
{
stopscroll = false;
sh = setInterval("scrollLeft()",20);
}

function Right()
{
stopscroll = false;
sh = setInterval("scrollRight()",20);
}

function StopScroll()
{
stopscroll = true;
clearInterval( sh );
}

function SelectType(value)
{
document.all.sendForm.page.value = 1;
document.all.sendForm.type.value = value;

document.all.sendForm.submit();
}

function init()
{
with(marquees)
{
style.height=0;
style.width=marqueesWidth;
style.overflowX="hidden";
style.overflowY="visible";
style.align = "center";
noWrap=true;
}
}

//-->

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