// ====================================================================
//       URLEncode and URLDecode functions
//
//  Copyright Albion Research Ltd. 2002
//  http://www.albionresearch.com/
//
//  Use of the original parsing function, modified for use
//  on Job.net by forgetfoo.
//      http://www.forgetfoo.com/
// ====================================================================

function SearchEncode( )
{
	// The Javascript escape and unescape functions do not correspond
	// with what browsers actually do...
	var SAFECHARS = "0123456789" +					// Numeric
					"ABCDEFGHIJKLMNOPQRSTUVWXYZ" +	// Alphabetic
					"abcdefghijklmnopqrstuvwxyz" +
					"-_.!~*'()";					// RFC2396 Mark characters
	var HEX = "0123456789ABCDEF";

	var plaintext = document.SearchForm.keywords.value;
	//var location = document.SearchForm.selRegion.value;
	var encoded = "";
	
	for (var i = 0; i < plaintext.length; i++ ) {
		var ch = plaintext.charAt(i);
	    if (ch == " ") {
		    encoded += "+";				// x-www-urlencoded, rather than %20
		} else if (SAFECHARS.indexOf(ch) != -1) {
		    encoded += ch;
		} else {
		    var charCode = ch.charCodeAt(0);
			if (charCode > 255) {
			    alert( "Unicode Character '" 
                        + ch 
                        + "' cannot be encoded using standard URL encoding.\n" +
				          "(URL encoding only supports 8-bit characters.)\n" +
						  "A space (+) will be substituted." );
				encoded += "+";
			} else {
				encoded += "%";
				encoded += HEX.charAt((charCode >> 4) & 0xF);
				encoded += HEX.charAt(charCode & 0xF);
			}
		}
	} 
	
	if (plaintext == "")
	{
		alert("Please enter a search term or keyword.");
		document.getElementById('keywords').style.backgroundColor = '#ffc';
		return false;
	} 
	else
	{	
		document.getElementById('SearchForm').style.display = 'none';
		document.getElementById('loading').style.display = '';
		/*
		if(document.getElementById('selRegion').value == "")
			location.href = '/search/' + encoded + '/';
		else
			location.href = '/search/' + encoded + '/' + document.getElementById('selRegion').value + '/';
		*/
		location.href = 'http://www.job.net/search-jobs/' + encoded + '/';
		return false;
	}	
};

function URLDecode( )
{
   // Replace + with ' '
   // Replace %xx with equivalent character
   // Put [ERROR] in output if %xx is invalid.
   var HEXCHARS = "0123456789ABCDEFabcdef"; 
   var encoded = document.URLForm.F2.value;
   var plaintext = "";
   var i = 0;
   while (i < encoded.length) {
       var ch = encoded.charAt(i);
	   if (ch == "+") {
	       plaintext += " ";
		   i++;
	   } else if (ch == "%") {
			if (i < (encoded.length-2) 
					&& HEXCHARS.indexOf(encoded.charAt(i+1)) != -1 
					&& HEXCHARS.indexOf(encoded.charAt(i+2)) != -1 ) {
				plaintext += unescape( encoded.substr(i,3) );
				i += 3;
			} else {
				alert( 'Bad escape combination near ...' + encoded.substr(i) );
				plaintext += "%[ERROR]";
				i++;
			}
		} else {
		   plaintext += ch;
		   i++;
		}
	} // while
   document.getElementById('output').innerHTML = plaintext;
   return false;
};