/**
 * @author mryan
 */

var rolloverList = new Array();

rolloverList.push("topnava");

$(document).ready(function() {
	var al = rolloverList.length;
	
	for(i = 0; i < al; i++)
	{		
		var elements = $("." + rolloverList[i]);		
		var eal = elements.length;
		
		for(j = 0; j < eal; j++)
		{			
			elements[j].onmouseover = function()
			{				
				this.src = this.src.replace("aa", "bb");
			}
			
			elements[j].onmouseout = function()
			{
				this.src = this.src.replace("bb", "aa");
			}			
		}		
	}
});