//Alias for document.getElementById to save bandwidth
function gI(e){return document.getElementById(e);}

var sImageRestore= null;
var imgList= new Array();
function loadImage(sPicture, sImgSrc) {
	imgList[sPicture]= new Image();
	imgList[sPicture].src= sImgSrc;
}
function rollIn(sImgName,sPicture){sImageRestore=document[sImgName].src;document[sImgName].src=imgList[sPicture].src;}

function rollOut(sImgName,sPicture){document[sImgName].src=sImageRestore;sImageRestore=null;}

function URLEncode(plaintext)
{
	// 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 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);
			}
		}
	} // for

	return encoded;
};
function URLDecode(encoded)
{
   // Replace + with ' '
   // Replace %xx with equivalent character
   // Put [ERROR] in output if %xx is invalid.
   var HEXCHARS = "0123456789ABCDEFabcdef"; 
   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
   return plaintext;
};
function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
	if(!(checkIt('opera')&&navigator.platform.indexOf('Mac')!=-1)){
		var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
	}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
	if(!(checkIt('opera')&&navigator.platform.indexOf('Mac')!=-1)){
  		var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   		if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
	}
}
function openParent(URL,URL2){if(window.opener){if(URL2!=null)window.location=URL2;else{window.opener.location=URL;window.opener.focus();}}else{window.location=URL;}}
function OpenWindow(strPage, strName, strProps){
	if(strProps == 'undefined'){
		strProps = 'height=400,width=405,status=no,menu=no,scrollbars=yes,address=no';
	}
	window.open(strPage, strName, strProps);
}

function checkIt(string){return navigator.userAgent.toLowerCase().indexOf(string)+1;}

function getScrollXY(){
  var scrOfX=0, scrOfY=0;
  if(typeof(window.pageYOffset)=='number'){
    //Netscape compliant
    scrOfY=window.pageYOffset;
    scrOfX=window.pageXOffset;
  }else if(document.body&&(document.body.scrollLeft||document.body.scrollTop)){
    //DOM compliant
    scrOfY=document.body.scrollTop;
    scrOfX=document.body.scrollLeft;
  }else if(document.documentElement&&(document.documentElement.scrollLeft||document.documentElement.scrollTop)){
    //IE6 standards compliant mode
    scrOfY=document.documentElement.scrollTop;
    scrOfX=document.documentElement.scrollLeft;
  }
  return [scrOfX,scrOfY];
}
function getSize() {
  var W=0, H=0;
  if(typeof(window.innerWidth)=='number'){
    //Non-IE
    W=window.innerWidth;
    H=window.innerHeight;
  }else if(document.documentElement&&(document.documentElement.clientWidth||document.documentElement.clientHeight)){
    //IE 6+ in 'standards compliant mode'
    W=document.documentElement.clientWidth;
    H=document.documentElement.clientHeight;
  }else if(document.body&&(document.body.clientWidth||document.body.clientHeight)){
    //IE 4 compatible
    W=document.body.clientWidth;
    H=document.body.clientHeight;
  }
  return [W,H];
}
function centerWindow() {
	var x = getSize()[0];
	var y = getSize()[1];
	
	x = window.screen.availWidth/2-x/2;
	y = window.screen.availHeight/2 - y/2;
	window.moveTo(x,y);	
}

function createCookie(name,value,days){
	if (days){
		var date=new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires="; expires="+date.toGMTString();
	} else var expires="";
	document.cookie=name+"="+value+expires+"; path=/";
}

function readCookie(name){
	var nameEQ=name+"=";
	var ca=document.cookie.split(';');
	for(var i=0;i<ca.length;i++){
		var c=ca[i];
		while(c.charAt(0)==' ') c=c.substring(1,c.length);
		if(c.indexOf(nameEQ)==0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name){
	createCookie(name,"",-1);
}