Flash 大图片按比例自动缩放

function(target_mc){

var tWidth = 0; var tHeight = 0; var SW = Stage.width; var SH = Stage.height; if (target_mc._width<=SW && target_mc._height<=SH) { ?? tWidth = target_mc._width; ?? tHeight = target_mc._height; } else { ?? var w = target_mc._width/SW; ?? var h = target_mc._height/SH; ?? if (w>h) { ?? ?? tWidth = SW; ?? ?? tHeight = ((w>=1) ? Math.round(target_mc._height/w) : Math.round(target_mc._height*w)); ?? } else if (w<h) { ?? ?? tHeight = SH; ?? ?? tWidth = ((h>=1) ? Math.round(target_mc._width/h) : Math.round(target_mc._width*h)); ?? } else { ?? ?? tWidth = SW; ?? ?? tHeight = SH; ?? } } target_mc._width = tWidth; target_mc._height = tHeight; }; }