function changeimage(img_name,img_src) {document[img_name].src=img_src;}
function picchange(theImage){
	var imgSrc=theImage.src;
	var imgName=theImage.name;
	var imgPre;
	if (imgSrc.indexOf('_on')>-1) {
		if (imgName.indexOf(navImgName)>-1) {
			imgSrc=imgSrc.replace('_on.gif','_lum.gif');
		} else {
			imgSrc=imgSrc.replace('_on.gif','_off.gif');
		}
	} else {
		imgSrc=imgSrc.replace('_off.gif','_on.gif').replace('_lum.gif','_on.gif');
//		imgSrc=imgSrc.substr(0,imgSrc.indexOf('_off.gif'))+'_on.gif';
	}
	document[imgName].src=imgSrc;
}
function preloadNav()
{
	var imgSrc='';
	var picOn = new Array();
	picOn[0] = "/gallery/icons/home_on.gif";
	picOn[1] = "/gallery/icons/gallery_on.gif";
	picOn[2] = "/gallery/icons/shopping_on.gif";
	picOn[3] = "/gallery/icons/contact_on.gif";
	picOn[4] = "/gallery/icons/comments_on.gif";
	picOn[5] = "/gallery/icons/aboutmyart_on.gif";
	picOn[6] = "/gallery/icons/aip_on.gif";
	picOn[7] = "/gallery/icons/figurative_on.gif";
	picOn[8] = "/gallery/icons/exhibitions_on.gif";
	picOn[9] = "/gallery/icons/biography_on.gif";
	picOn[10] = "/gallery/icons/interview_on.gif";
	picOn[11] = "/gallery/icons/giftvoucher_on.gif";
	picOn[12] = "/gallery/icons/myownsite_on.gif";
		
	var picOnLoad = new Array();
	for (var i = 0; i < picOn.length; i++)
	{
		picOnLoad[i] = new Image();
		picOnLoad[i].src = picOn[i];
	}
}