/***** Gif ON *****/

function ImgOn( ImgName ){
	document.images[ ImgName ].src = "img/" + ImgName + "_on.gif";
}

/***** Gif OFF *****/

function ImgOff( ImgName ){
	document.images[ ImgName ].src = "img/" + ImgName + ".gif";
}

/***** Jpeg ON *****/

function JpgOn( ImgName ){
	document.images[ ImgName ].src = "img/" + ImgName + "_on.jpg";
}

/***** Jpeg OFF *****/

function JpgOff( ImgName ){
	document.images[ ImgName ].src = "img/" + ImgName + ".jpg";
}