//
// If image object is available
//

if (document.images) {
    
	//
	// MouseOver Images
	//

	forensicOn     = new Image();		    
	forensicOn.src = "forensic_over.jpg";
 
	hsOn     = new Image();
	hsOn.src = "hs_over.jpg";  

	mpengOn     = new Image();
	mpengOn.src = "mpeng_over.jpg";

	varOn     = new Image();
	varOn.src = "var_over.jpg";

	aboutOn     = new Image();
	aboutOn.src = "about_over.jpg";

	//
	// MouseOut Images
	//

	forensicOff     = new Image();		  	
	forensicOff.src = "forensic.jpg";
 
	hsOff     = new Image();          
	hsOff.src = "hs.jpg";

	mpengOff     = new Image();
	mpengOff.src = "mpeng.jpg";

	varOff     = new Image();
	varOff.src = "var.jpg";

	aboutOff     = new Image();
	aboutOff.src = "about.jpg";

	//
	// Secondary Images
	//

	forensicAd     = new Image();         
	forensicAd.src = "forensicmosaic.jpg";
  
	hsAd     = new Image();
	hsAd.src = "hsmosaic.jpg";

	mpengAd     = new Image();
	mpengAd.src = "mpengmosaic.jpg";
  
	varAd     = new Image();
	varAd.src = "varmosaic.jpg";  

	aboutAd     = new Image();
	aboutAd.src = "aboutmosaic.jpg";  
}

function imgOn(imgName) {

	if (document.images) {
            document[imgName].src = eval(imgName + "On.src");
            document["mosaic"].src = eval(imgName + "Ad.src");
	}
}
			
function imgOff(imgName) {

    if (document.images) {
        document[imgName].src = eval(imgName + "Off.src");
        document["mosaic"].src = "defaultmosaic.jpg";        
	}
}