var chk = navigator.userAgent.indexOf("Mozilla/3")>= 0 || navigator.userAgent.indexOf("Mozilla/4")>= 0 || navigator.userAgent.indexOf("Mozilla/5.0")>=0;
	
	if ( chk )	{
		var menu1_on=new Image();	
		var menu1_off=new Image();	
		var menu2_on=new Image();	
		var menu2_off=new Image();	
		var menu3_on=new Image();	
		var menu3_off=new Image();	
		var menu4_on=new Image();	
		var menu4_off=new Image();	
		var menu5_on=new Image();
		var menu5_off=new Image();
		var menu6_on=new Image();
		var menu6_off=new Image();
                var menu7_on=new Image();
		var menu7_off=new Image();
		var menu8_on=new Image();
                var menu8_off=new Image();
		var menu9_on=new Image();
		var menu9_off=new Image();
		var menu10_on=new Image();
		var menu10_off=new Image();
                var menu11_on=new Image();
		var menu11_off=new Image();
		var menu12_on=new Image();
		var menu12_off=new Image();
 
                                                                     		
		menu1_off.src="images/main_m8/8_01.gif";	
		menu1_on.src="images/main_m8/18_01.gif";	
		menu2_off.src="images/main_m8/8_02.gif";	
		menu2_on.src="images/main_m8/18_02.gif";	
		menu3_off.src="images/main_m8/8_03.gif";	
		menu3_on.src="images/main_m8/18_03.gif";	
		menu4_off.src="images/main_m8/8_04.gif";	
		menu4_on.src="images/main_m8/18_04.gif";   
		menu5_off.src="images/main_m8/8_05.gif";
		menu5_on.src="images/main_m8/18_05.gif";
		menu6_off.src="images/main_m8/8_06.gif";
		menu6_on.src="images/main_m8/18_06.gif";
		menu7_off.src="images/main_m8/8_07.gif";
		menu7_on.src="images/main_m8/18_07.gif";
		menu8_off.src="images/main_m8/8_08.gif";
		menu8_on.src="images/main_m8/18_08.gif";
     		menu9_off.src="images/main_m8/8_09.gif";
		menu9_on.src="images/main_m8/18_09.gif";
		menu10_off.src="images/main_m8/8_10.gif";
		menu10_on.src="images/main_m8/18_10.gif";
		menu11_off.src="images/main_m8/8_11.gif";
		menu11_on.src="images/main_m8/18_11.gif";
		menu12_off.src="images/main_m8/8_12.gif";
		menu12_on.src="images/main_m8/18_12.gif";




}

	function changeImage(oldImage, newImage) 
	{
		oldImage.src=newImage.src;
	}