JavaScript は IFrame の高さを自動的に設定します

[javascript]
function SetIFrameHeight(down) {
var Sys = {}; 
var ua = navigator.userAgent.toLowerCase(); 
変数; 
(s = ua.match(/msie ([d.]+)/)) ? Sys.ie = s[1] :
(s = ua.match(/firefox/([d.]+)/)) ? Sys.firefox = s[1] :
(s = ua.match(/chrome/([d.]+)/)) ? Sys.chrome = s[1] :
(s = ua.match(/opera.([d.]+)/)) ? Sys.opera = s[1] :
(s = ua.match(/version/([d.]+).*safari/)) ? Sys.safari = s[1] : 0; 
var pTar = null; 
if (document.getElementById) {
pTar = document.getElementById(down); 
} else {
eval('pTar=' + down + ';'); 
}
pTar.style.display = "ブロック"; 
if (Sys.ie) {
if (Sys.ie == '9.0') {
pTar.height = pTar.contentWindow.document.body.offsetHeight + 15 + "px"; 
pTar.width = pTar.contentWindow.document.body.scrollWidth + "px"; 
} else if (Sys.ie == '8.0') {
デバッガー; 
pTar.height = pTar.Document.body.offsetHeight + 15 + "px"; 
pTar.width = pTar.Document.body.scrollWidth + "px"; 
} else {
pTar.height = pTar.Document.body.scrollHeight + 25 + "px"; 
pTar.width = pTar.Document.body.scrollWidth + "px"; 
}
}
if (Sys.firefox) {
pTar.height = pTar.contentDocument.body.offsetHeight + 15 + "px"; 
pTar.width = pTar.contentDocument.body.scrollWidth + "px"; 
}
if (Sys.chrome) {
pTar.height = pTar.contentDocument.body.offsetHeight; 
pTar.width = pTar.contentDocument.body.scrollWidth; 
}
if (Sys.opera) {
pTar.height = pTar.contentDocument.body.offsetHeight; 
pTar.width = pTar.contentDocument.body.scrollWidth; 
}
if (Sys.safari) {
if (pTar.contentDocument.body.offsetHeight pTar.height = pTar.contentDocument.body.offsetHeight + 10; 
} else {
pTar.height = pTar.contentDocument.body.offsetHeight; 
}
            pTar.width = pTar.contentDocument.body.scrollWidth; 
}
}

function SetIFrameHeight(down) {
var Sys = {};
var ua = navigator.userAgent.toLowerCase();
var s;
(s = ua.match(/msie ([d.]+)/)) ? Sys.ie = s[1] :
(s = ua.match(/firefox/([d.]+)/)) ? Sys.firefox = s[1] :
(s = ua.match(/chrome/([d.]+)/)) ? Sys.chrome = s[1] :
(s = ua.match(/opera.([d.]+)/)) ? Sys.opera = s[1] :
(s = ua.match(/version/([d.]+).*safari/)) ? Sys.safari = s[1] : 0;
var pTar = null;
if (document.getElementById) {
pTar = document.getElementById(down);
} else {
eval ('pTar=' + ダウン + ' ;');
}
pTar.style.display = "block";
if (Sys.ie) {
if (Sys.ie == '9.0') {
pTar.height = pTar. contentWindow.document.body .offsetHeight + 15 + "px";
pTar.width = pTar.contentWindow.document.body.scrollWidth + "px";
} else if (Sys.ie == '8.0') {
デバッガ;
pTar.height = pTar.Document.body.offsetHeight + 15 + "px";
pTar.width = pTar.Document.body.scrollWidth + "px";
} else {
pTar.height = pTar.Document.body.scrollHeight + 25 + "px";
pTar.width = pTar.Document.body.scrollWidth + "px";
}
}
if (Sys.firefox) {
pTar.height = pTar. contentDocument.body.offsetHeight + 15 + " px";
pTar.width = pTar.contentDocument.body.scrollWidth + "px";
}
if (Sys.chrome) {
pTar.height = pTar.contentDocument.body.offsetHeight;
pTar.width = pTar. contentDocument.body.scrollWidth;
}
if (Sys.opera) {
pTar.height = pTar.contentDocument.body.offsetHeight;
pTar.width = pTar.contentDocument.body.scrollWidth;
}
if (Sys.safari ) {
if (pTar.contentDocument.body.offsetHeight pTar.height = pTar.contentDocument.body.offsetHeight + 10;
} else {
pTar.height = pTar.contentDocument.body. offsetHeight;
}
pTar.width = pTar.contentDocument.body.scrollWidth;
}
}