function iHandler(){
	this.navClick = navClick;
	this.autoPlayInit = navClick;   
}                            

function navClick(target, image, navtarget){ 
   
	$(target).src = image;     
	var pNode = navtarget.parentNode.parentNode;
	
	var navButtons = pNode.getElementsByTagName('img'); 
	
	for(i=0; i<navButtons.length; i++){
	  	navButtons[i].src = navButtons[i].src.replace('dot_a', 'dot_n');
		
	} 
   navtarget.src = navtarget.src.replace('dot_n', 'dot_a'); 
	return false;   
}