var cached=0;

if (document.images){

	var theNavAry = new Array("MTLE90", "RRGC16", "PKEGC4", "THGC3", "EAGC7", "HBGC19", "SCGC10", "PHGC79", "JWGC57")
	var theNavAryLng = theNavAry.length;
	
	for(i=0; i<theNavAryLng; i++){
		imgName = theNavAry[i];
		
		eval("the_" + imgName + "_off = new Image();");
		eval("the_" + imgName + "_on = new Image();");
		eval("the_" + imgName + "_off.src = 'nav/" + imgName + ".gif'");
		eval("the_" + imgName + "_on.src = 'nav/" + imgName + "_on.gif'");
	}
	
cached=1;
}

function navImageOn(imgName, artistName) {
	if (cached==1) {
	lineOn = eval("the_" + imgName + "_on.src");
	document.getElementById(imgName).src= lineOn;

	document.getElementById('preview').src= "/artists/" + artistName + "/455x271/" + imgName + ".jpg";
	}
}

function navImageOff(imgName) {
	if (cached==1) {
	lineOff = eval("the_" + imgName + "_off.src");
	document.getElementById(imgName).src= lineOff;
	}
}