// JavaScript Document	
var xmlHttp=null;

function GetXmlHttpObject()
{
	try
	{
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
	}
	catch (e)
	{
		//Internet Explorer
		try
		{
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	return xmlHttp;
}

function var_dump(obj) {
	if(typeof obj == "object") {
		alert("Type: "+typeof(obj)+((obj.constructor) ? "\nConstructor: "+obj.constructor : "")+"\nValue: " + obj);
	} else {
		alert("Type: "+typeof(obj)+"\nValue: "+obj);
	}
}//end function var_dump

function URLEncode(unencoded_url) {
	var SAFECHARS = "0123456789" +	// Numeric
	"ABCDEFGHIJKLMNOPQRSTUVWXYZ" +	// Alphabetic
	"abcdefghijklmnopqrstuvwxyz" +
	"-_.!~*'()";					// RFC2396 Mark characters
	var HEX = "0123456789ABCDEF";
	
	var plaintext = unencoded_url;
	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);
			}
		}
	} // end for
	return encoded;
}

function URLDecode(encoded_url) {
	var HEXCHARS = "0123456789ABCDEFabcdef"; 
	var encoded = encoded_url;
	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++;
		}
	} // end while
	return plaintext;
}

function enableJsElement(jsSelectElementId, stdElementId) {
	if (document.getElementById(stdElementId) && document.getElementById(jsSelectElementId)) {
		document.getElementById(stdElementId).style.display = 'none';
		document.getElementById(jsSelectElementId).style.display = 'block';
	}
}

function checkAll(formName, checkBoxName) {
	var searchForm = eval('document.'+formName);
	for (var i=0; i<searchForm.elements.length; i++) {
		if (searchForm.elements[i].name==checkBoxName) searchForm.elements[i].checked = true;
	}	
}

function uncheckAll(formName, checkBoxName) {
	var searchForm = eval('document.'+formName);
	for (var i=0; i<searchForm.elements.length; i++) {
		if (searchForm.elements[i].name==checkBoxName) searchForm.elements[i].checked = false;
	}	
}

function removeElement(elementID) {
	var elem = document.getElementById(elementID);
	elem.parentNode.removeChild(elem);
}