function changeImages() {

	if( document.images && (preloadFlag == true) ) {

		for( var i=0; i<changeImages.arguments.length; i+=2 ) {

			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];

		};

	};

}



var preloadFlag = false;

function preloadImages() {

	if( document.images ) {

		preloadFlag = true;

	};

}



/************************

<script language="JavaScript" src="./js/core.js"></script>

<img name="someName" src="./images/SomeImage.gif" border="0" width="28" height="14">

changeImages('someName','./images/SomeImageChanged.gif');

************************/





var currentThumbElm = undefined;

function switchCssOnThumb( id ) {

	var thElm = document.getElementById(id);



	if( currentThumbElm != thElm ) {

		if( thElm.className.lastIndexOf("On") == -1 ) {

			if( currentThumbElm == undefined ) {

				thElm.className = thElm.className + "On";

			} else {

				currentThumbElm.className = currentThumbElm.className.substring(0,currentThumbElm.className.length-2);

				thElm.className = thElm.className + "On";

			};

		};

	

		currentThumbElm = thElm;

	};

}