<!--
var hex_chr = "0123456789ABCDEF";
function hex(num) {
 var str = "";
 for(var j = 4; j >= 0; j--) {
 str += hex_chr.charAt((num >>> (j * 4)) & 0x0F);
 }
 len = str.length;
 return "%" + str.substring((len - 2),len);
}
function toUTF8(tchar) {
 var k = 0;
 var str = "";
 var mask = 0;
 var pattern = 0;
 if (tchar < 0x80) {
 k = 0;
 } else if ((tchar > 0x7F) && (tchar < 0x800)) {
 k = 1;
 } else if ((tchar > 0x7FF) && (tchar < 0x10000)) {
 k = 2;
 } else if ((tchar > 0xFFFF) && (tchar < 0x200000)) {
 k = 3;
 } else if ((tchar > 0x1FFFFF) && (tchar < 0x4000000)) {
 k = 4;
 } else if ((tchar > 0x3FFFFFF) && (tchar <= 0x7FFFFFFF)) {
 k = 5;
 }
 for (i = 0; i < k; i++) {
 num = ((tchar >> (6 * i)) & 0xBF) | 0x80;
 str = hex(num) + str;
 }
 if (k == 1) {
 mask = 0xDF;
 pattern = 0xC0;
 } else if (k == 2) {
 mask = 0xEF;
 pattern = 0xE0;
 } else if (k == 3) {
 mask = 0xF7;
 pattern = 0xF0;
 } else if (k == 4) {
 mask = 0xFB;
 pattern = 0xF8;
 } else if (k == 5) {
 mask = 0xFD;
 pattern = 0xFC;
 }
 if (k > 0) {
 num = ((tchar >> (6 * k)) & mask) | pattern;
 str = hex(num) + str;
 } else {
 str = hex(tchar);
 }
 return str;
}

function encode(val) {
 var len = val.length;
 var i = 0;
 var newStr = "";
 for (i=0;i<len;i++) {
 tval1=val.substring(i,i+1);
 newStr = newStr + toUTF8(tval1.charCodeAt(0));
 }
 return newStr;
}
function search(form) {
var a = document.getElementById(form);
 var temp = a.SearchTxt.value;
 var txt = encode(temp);
 window.open("http://www.google.com/search?hl=en&ie=UTF8&oe=UTF8&btnG=Google+Search&as_sitesearch=ln.edu.hk&safe=images&as_q=" + txt);
 a.SearchTxt.value = "";
}
//,null,"height=768,width=1024,status=yes,toolbar=yes,menubar=yes,location=yes,scrollbars=yes"// -->