Js 漂浮层
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<div id="scrollDiv">放些文字或图片</div>
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<script type="text/javascript">
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var x = 50,y = 60;
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var xin = true, yin = true ;
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var step = 1 ;
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var delay = 10 ;
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var obj=document.getElementById("scrollDiv") ;
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function closeDiv(){
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document.getElementById('scrollDiv').style.display='none';
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}
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function rollMethod() {
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var L=T=0;
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var R= document.body.clientWidth-obj.offsetWidth ;
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var B = document.body.clientHeight-obj.offsetHeight ;
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obj.style.left = x + document.body.scrollLeft ;
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obj.style.top = y + document.body.scrollTop ;
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x = x + step*(xin?1:-1) ;
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if (x < L) { xin = true; x = L}
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if (x > R){ xin = false; x = R}
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y = y + step*(yin?1:-1)
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if (y < T) { yin = true; y = T }
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if (y > B) { yin = false; y = B }
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}
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var itl= setInterval("rollMethod()", delay) ;
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obj.onmouseover=function(){clearInterval(itl)} ;
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obj.onmouseout=function(){itl=setInterval("rollMethod()", delay);
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}
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</script>
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<div id="scrollDiv">放些文字或图片</div>2
<script type="text/javascript">3
var x = 50,y = 60; 4
var xin = true, yin = true ;5
var step = 1 ;6
var delay = 10 ;7
var obj=document.getElementById("scrollDiv") ;8
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function closeDiv(){10
document.getElementById('scrollDiv').style.display='none';11
}12
function rollMethod() { 13
var L=T=0;14
var R= document.body.clientWidth-obj.offsetWidth ;15
var B = document.body.clientHeight-obj.offsetHeight ;16
obj.style.left = x + document.body.scrollLeft ;17
obj.style.top = y + document.body.scrollTop ;18
x = x + step*(xin?1:-1) ; 19
if (x < L) { xin = true; x = L} 20
if (x > R){ xin = false; x = R} 21
y = y + step*(yin?1:-1) 22
if (y < T) { yin = true; y = T } 23
if (y > B) { yin = false; y = B } 24
} 25
var itl= setInterval("rollMethod()", delay) ;26
obj.onmouseover=function(){clearInterval(itl)} ;27
obj.onmouseout=function(){itl=setInterval("rollMethod()", delay);28
} 29
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</script>31

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