一段我看不太懂的js求高手帮我加个onclick事件就是点击图片就走一个页面

var widths1267791081555mliz = 990;
var heights1267791081555mliz = 266;
var counts1267791081555mliz = 3;
img1267791081555mliz1 = new Image();
img1267791081555mliz1.src = 'images/main0.jpg';//itat实训教育图
url1267791081555mliz1 = new Image();
url1267791081555mliz1.src = '/WebContent/insideJsps/jjfa_main/jjfa_main4.jsp';
text1267791081555mliz1 = '周年';
img1267791081555mliz2 = new Image();
img1267791081555mliz2.src = 'images/main1.jpg';//传统it服务
url1267791081555mliz2 = new Image();
url1267791081555mliz2.src = '#';
text1267791081555mliz2 = '春节';
img1267791081555mliz3 = new Image();
img1267791081555mliz3.src = 'images/main2.jpg';//外包服务
url1267791081555mliz3 = new Image();
url1267791081555mliz3.src = '#';
text1267791081555mliz3 = '分公司';var nn1267791081555mliz = 1;
var key1267791081555mliz = 0;
function change_img1267791081555mliz() {
if (key1267791081555mliz == 0) {
key1267791081555mliz = 1;
} else if (document.all) {
document.getElementById("pic1267791081555mliz").filters[0].Apply();
document.getElementById("pic1267791081555mliz").filters[0]
.Play(duration = 2);
}
eval('document.getElementById("pic1267791081555mliz").src=img1267791081555mliz' + nn1267791081555mliz + '.src');
eval('document.getElementById("texturl1267791081555mliz").href=url1267791081555mliz' + nn1267791081555mliz + '.src');
eval('document.getElementById("texturl1267791081555mliz").innerHTML=text1267791081555mliz' + nn1267791081555mliz + '');
for ( var i = 1; i <= counts1267791081555mliz; i++) {
document.getElementById("xxjdjj1267791081555mliz" + i).className = 'axx';
}
document.getElementById("xxjdjj1267791081555mliz" + nn1267791081555mliz).className = 'bxx';
nn1267791081555mliz++;
if (nn1267791081555mliz > counts1267791081555mliz) {
nn1267791081555mliz = 1;
}
tt1267791081555mliz = setTimeout('change_img1267791081555mliz()', 4000);
}
function changeimg1267791081555mliz(n) {
nn1267791081555mliz = n;
window.clearInterval(tt1267791081555mliz);
change_img1267791081555mliz();
}
document.write('<style>');
document.write('.axx{padding:1px 7px;border-left:#cccccc 1px solid;}');
document
.write('a.axx:link,a.axx:visited{text-decoration:none;color:#fff;line-height:12px;font:9px sans-serif;background-color:#666;}');
document
.write('a.axx:active,a.axx:hover{text-decoration:none;color:#fff;line-height:12px;font:9px sans-serif;background-color:#999;}');
document.write('.bxx{padding:1px 7px;border-left:#cccccc 1px solid;}');
document
.write('a.bxx:link,a.bxx:visited{text-decoration:none;color:#fff;line-height:12px;font:9px sans-serif;background-color:#D34600;}');
document
.write('a.bxx:active,a.bxx:hover{text-decoration:none;color:#fff;line-height:12px;font:9px sans-serif;background-color:#D34600;}');
document.write('</style>');
document
.write('<div style="width:' + widths1267791081555mliz + 'px;height:'
+ heights1267791081555mliz
+ 'px;overflow:hidden;text-overflow:clip;">');
document
.write('<div><a id="url1267791081555mliz"><img id="pic1267791081555mliz" style="border:0px;filter:progid:dximagetransform.microsoft.wipe(gradientsize=1.0,wipestyle=4, motion=forward)" width='
+ widths1267791081555mliz
+ ' height='
+ (heights1267791081555mliz - 12) + ' /></a></div>');
document
.write('<div style="filter:alpha(style=1,opacity=10,finishOpacity=80);background:#888888;width:100%-2px;text-align:right;top:-12px;position:relative;margin:1px;height:12px;padding:0px;margin:0px;border:0px;">');
for ( var i = 1; i < counts1267791081555mliz + 1; i++) {
document.write('<a href="javascript:changeimg1267791081555mliz(' + i
+ ');" id="xxjdjj1267791081555mliz' + i
+ '" class="axx" target="_self">' + i + '</a>');
}
document
.write('</div><div style="display:none;text-align:center;background:#FFFFFF;font-size:12px;width:100%-2px;top:-12px;position:relative;margin:1px;height:12px;padding:0px;margin:0px;border:0px;" ><a id="texturl1267791081555mliz"></a></div></div>');
change_img1267791081555mliz();