// JavaScript Document
function button_click(obj,prefix,over,none){
	//alert(obj.id);
	//alert(prefix);
	var g=0;
	while(MM_findObj(prefix+'_select_butt['+g+']') != null){
		c_obj=MM_findObj(prefix+'_select_butt['+g+']');
			if(c_obj.id == obj.id){
				c_obj.src=over;
			}else{
				c_obj.src=none;
			}
		g=g+1;
	}
	
}

function find_active (prefix,over){
var g=0;	

	while(MM_findObj(prefix+'_select_butt['+g+']') != null){
		c_obj=MM_findObj(prefix+'_select_butt['+g+']');
		if(c_obj.src == over){
			return g;
			break;
		}
	g=g+1;
	}

}


function button_next(prefix,over,none,count){
	active=find_active(prefix,over);
	obj=MM_findObj(prefix+'_select_butt['+(active+1)+']');
	if(obj){
		button_click(obj,prefix,over,none);		
	}else{
		button_click(MM_findObj(prefix+'_select_butt[0]'),prefix,over,none);	
	}
	
}

function button_prev(prefix,over,none,count){
	active=find_active(prefix,over);
	obj=MM_findObj(prefix+'_select_butt['+(active-1)+']');
	if(obj){
		button_click(obj,prefix,over,none);		
	}else{
		button_click(MM_findObj(prefix+'_select_butt['+(count-1)+']'),prefix,over,none);	
	}	
}