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var zoomRate = 20;//ÿ´Î·ÅËõ±ÈÀýÔöÁ¿
var maxRate = 300;//×î´ó·Å´ó±¶Êý
var minRate = 20;//×îСËõС±¶Êý
var currZoom = 100;//µ±Ç°Ëõ·Å±È
var dvWidth = 200;//¹¹ÔìËõ·ÅtoolbarµÄ¿í¶È
var dvHeight = 30;///¹¹ÔìËõ·ÅtoolbarµÄ¸ß¶È
var cname = '';
//--------------cookie--------------------------//
//½«ÒÔÇ°Ñ¡ÔñµÄzoom´æÈëcookie//
function SetCookie(name, value) {
var exdate = new Date()
exdate.setDate(exdate.getDate() + 30)
document.cookie = name + "=" + escape(value) + ";expires=" + exdate.toGMTString();
// document.cookie = name + "=" + escape(value) + ";";
}
function GetCookie(name) {
if (document.cookie.length > 0) {
var start = document.cookie.indexOf(name + "=")
if (start != -1) {
start = start + name.length + 1
var end = document.cookie.indexOf(";", start)
if (end == -1) end = document.cookie.length
return unescape(document.cookie.substring(start, end))
}
}
return ""
}
//---------------------Zoom------------------------//
function Zoom() {
//ÔÚÒÑÓеÄÒ³Ã涯̬¼ÓÔØdiv£¬ÓÃÀ´·ÅÈ빦Äܿؼþ
var dv = document.createElement('div');
dv.setAttribute('id', 'btnDiv');
dv.style.position = "absolute";
dv.style.display = "block";
dv.style.left = 0;
dv.style.top = 0;
dv.style.width = dvWidth;
dv.style.height = dvHeight;
dv.style.border = "2px inset gray";
dv.style.backgroundColor = "transparent";
dv.innerHTML = "ButtonArea";
document.body.appendChild(dv);
//Ìí¼Ó¹¦Äܿؼþ
var select = '<select id="showZoom" onchange="changeZoom();"><option value="20%">20%</option><option value="40%">40%</option><option value="60%">60%</option><option value="80%">80


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