网页缩放的一段代码[原创]

　　2004.10.01发表于blog.csdn.net/zxub

var istep=0;
function zoomout(ReturnStep)
{
istep+=ReturnStep;
document.all.Form1.style.zoom=1+istep/100;
}
function zoomin(ReturnStep)
{
istep-=ReturnStep;
document.all.Form1.style.zoom=1+istep/100;
}
function zoomRev()
{
istep=0;
document.all.Form1.style.zoom=1;
}
function setZoom(ZoomRate)
{
istep=ZoomRate-100;
document.all.Form1.style.zoom=1+istep/100;
}