if (document.images) { 

// top links
			img01on = new Image();      
			img01on.src = "images/btn_thegameplan-over.gif"; 
			img02on = new Image();      
			img02on.src = "images/btn_thevenues-over.gif"; 
			img03on = new Image();      
			img03on.src = "images/btn_theplayers-over.gif"; 
			img04on = new Image();      
			img04on.src = "images/btn_kevinsinfield-over.gif"; 
   

			img01off = new Image();      
			img01off.src = "images/btn_thegameplan.gif"; 
			img02off = new Image();      
			img02off.src = "images/btn_thevenues.gif"; 
			img03off = new Image();      
			img03off.src = "images/btn_theplayers.gif"; 
			img04off = new Image();      
			img04off.src = "images/btn_kevinsinfield.gif"; 
        }

// Images turn on.

function imgOn(imgName) {

        if (document.images) {

            document[imgName].src = eval(imgName + "on.src");

        }

}

// Images turn off.

function imgOff(imgName) {

        if (document.images) {

            document[imgName].src = eval(imgName + "off.src");

        }

}