var navImg,navI=new Array(),img=new Array();

function init(illnum){
	if(!UseHover)
		return false;
	navImg=document.getElementById("navimg");
	navI[0]=document.getElementById("navsquare0");
	navI[1]=document.getElementById("navsquare1");
	navI[2]=document.getElementById("navsquare2");
	navI[3]=document.getElementById("navsquare3");
	navI[4]=document.getElementById("navsquare4");
	navI[5]=document.getElementById("navsquare5");
	navI[6]=document.getElementById("navsquare6");
	navI[7]=document.getElementById("navsquare7");
	navI[8]=document.getElementById("navsquare8");
	navI[9]=document.getElementById("navsquare9");
	if(illnum!=null)
		setpic(illnum,navI[illnum]);
}

function ImgLoad(img)
{
  var a=new Image(); 
  a.src=img; 
  return a; 
}

if(UseHover) { 
	img[0]=ImgLoad('../../images/commercial/murals/ARG-60.jpg');
	img[1]=ImgLoad('../../images/commercial/murals/Corps-of-Eng-3-60.jpg');
	img[2]=ImgLoad('../../images/commercial/murals/Corps-of-Eng-4-60.jpg'); 
	img[3]=ImgLoad('../../images/commercial/murals/USDA-CREP-60.jpg'); 
	img[4]=ImgLoad('../../images/commercial/murals/USDA-OHRM-60.jpg');
	img[5]=ImgLoad('../../images/commercial/murals/US-Forest-Service-60.jpg'); 
	imgsquare=ImgLoad('../../images/navbtn.gif'); 
	imgsquareh=ImgLoad('../../images/graythumbh.gif');
}

function setpic(idx,navSquare,curSqr){
	if(!UseHover)
		return false;
	if(navImg==null)
		init();
	navImg.src=img[idx].src;
	for(var i=0;i<6;i++)
		navI[i].src=imgsquare.src;
	if(curSqr){
		curSqr.src=imgsquare.src;
		navSquare.src=imgsquareh.src;
	}
	else
		navSquare.src=imgsquareh.src;
}