function changeimg_s(){
        document.img_s.src="image/com/font_s_on.gif";
        document.img_n.src="image/com/font_n_off2.gif";
        document.img_b.src="image/com/font_b_off.gif";
}
	function changeimg_n(){
        document.img_s.src="image/com/font_s_off.gif";
        document.img_n.src="image/com/font_n_on.gif";
        document.img_b.src="image/com/font_b_off2.gif";
}
	function changeimg_b(){
        document.img_s.src="image/com/font_s_off.gif";
        document.img_n.src="image/com/font_n_off.gif";
        document.img_b.src="image/com/font_b_on.gif";
}
imgURL = new Array(); 
imgURL[0] = "image/menu/btn_6_1_off.gif"; 
imgURL[1] = "image/menu/btn_6_2_off.gif"; 
imgURL[2] = "image/menu/btn_6_3_off.gif"; 
imgURL[3] = "image/menu/btn_6_4_off.gif"; 
imgURL[4] = "image/menu/btn_6_5_off.gif"; 
imgURL[5] = "image/menu/btn_6_6_off.gif"; 
imgURL[6] = "image/menu/btn_6_7_off.gif"; 
imgURL[7] = "image/menu/btn_6_8_off.gif"; 
imgURL[8] = "image/menu/btn_6_9_off.gif"; 
imgURL[9] = "image/menu/btn_6_10_off.gif"; 
imgURL[10] = "image/menu/btn_6_11_off.gif"; 
imgURL[11] = "image/menu/btn_6_12_off.gif"; 

imgURL2 = new Array(); 
imgURL2[0] = "image/menu/btn_9_1_off.gif"; 
imgURL2[1] = "image/menu/btn_9_2_off.gif"; 
imgURL2[2] = "image/menu/btn_9_3_off.gif"; 
imgURL2[3] = "image/menu/btn_9_4_off.gif"; 
imgURL2[4] = "image/menu/btn_9_5_off.gif"; 
imgURL2[5] = "image/menu/btn_9_6_off.gif"; 
imgURL2[6] = "image/menu/btn_9_7_off.gif"; 
imgURL2[7] = "image/menu/btn_9_8_off.gif"; 
imgURL2[8] = "image/menu/btn_9_9_off.gif"; 
imgURL2[9] = "image/menu/btn_9_10_off.gif"; 
imgURL2[10] = "image/menu/btn_9_11_off.gif"; 
imgURL2[11] = "image/menu/btn_9_12_off.gif"; 
n = new Date().getMonth();