if(document.images) {
	var imgs = new Array();
	imgs[0] = new Image();  imgs[0].src = "/img/common/tab_about_on.gif";
	imgs[1] = new Image();  imgs[1].src = "/img/common/tab_about_off.gif";
	imgs[2] = new Image();  imgs[2].src = "/img/common/tab_junior_on.gif";
	imgs[3] = new Image();  imgs[3].src = "/img/common/tab_junior_off.gif";
	imgs[4] = new Image();  imgs[4].src = "/img/common/tab_high_on.gif";
	imgs[5] = new Image();  imgs[5].src = "/img/common/tab_high_off.gif";
	imgs[6] = new Image();  imgs[6].src = "/img/common/tab_student_on.gif";
	imgs[7] = new Image();  imgs[7].src = "/img/common/tab_student_off.gif";
	imgs[8] = new Image();  imgs[8].src = "/img/common/tab_about_on.gif";
	imgs[9] = new Image();  imgs[9].src = "/img/common/tab_about_off.gif";
	imgs[10] = new Image();  imgs[10].src = "/img/common/tab_junior_on.gif";
	imgs[11] = new Image();  imgs[11].src = "/img/common/tab_junior_off.gif";
	imgs[12] = new Image();  imgs[12].src = "/img/common/tab_high_on.gif";
	imgs[13] = new Image();  imgs[13].src = "/img/common/tab_high_off.gif";
	imgs[14] = new Image();  imgs[14].src = "/img/common/tab_student_on.gif";
	imgs[15] = new Image();  imgs[15].src = "/img/common/tab_student_off.gif";
	imgs[16] = new Image();  imgs[16].src = "/img/info/sub_01_on.gif";
	imgs[17] = new Image();  imgs[17].src = "/img/info/sub_01_off.gif";
	imgs[18] = new Image();  imgs[18].src = "/img/info/sub_02_on.gif";
	imgs[19] = new Image();  imgs[19].src = "/img/info/sub_02_off.gif";
	imgs[20] = new Image();  imgs[20].src = "/img/info/sub_03_on.gif";
	imgs[21] = new Image();  imgs[21].src = "/img/info/sub_03_off.gif";
	imgs[22] = new Image();  imgs[22].src = "/img/info/sub_04_on.gif";
	imgs[23] = new Image();  imgs[23].src = "/img/info/sub_04_off.gif";
	imgs[24] = new Image();  imgs[24].src = "/img/info/sub_05_on.gif";
	imgs[25] = new Image();  imgs[25].src = "/img/info/sub_05_off.gif";
	imgs[26] = new Image();  imgs[26].src = "/img/info/sub_06_on.gif";
	imgs[27] = new Image();  imgs[27].src = "/img/info/sub_06_off.gif";
	imgs[28] = new Image();  imgs[28].src = "/img/info/sub_07_on.gif";
	imgs[29] = new Image();  imgs[29].src = "/img/info/sub_07_off.gif";
	imgs[30] = new Image();  imgs[30].src = "/img/info/sub_08_on.gif";
	imgs[31] = new Image();  imgs[31].src = "/img/info/sub_08_off.gif";
	imgs[32] = new Image();  imgs[32].src = "/img/info/sub_09_on.gif";
	imgs[33] = new Image();  imgs[33].src = "/img/info/sub_09_off.gif";
	imgs[34] = new Image();  imgs[34].src = "/img/common/sub_book_on.gif";
	imgs[35] = new Image();  imgs[35].src = "/img/common/sub_book_off.gif";
	imgs[36] = new Image();  imgs[36].src = "/img/junior/sub_01_on.gif";
	imgs[37] = new Image();  imgs[37].src = "/img/junior/sub_01_off.gif";
	imgs[38] = new Image();  imgs[38].src = "/img/junior/sub_02_on.gif";
	imgs[39] = new Image();  imgs[39].src = "/img/junior/sub_02_off.gif";
	imgs[40] = new Image();  imgs[40].src = "/img/junior/sub_03_on.gif";
	imgs[41] = new Image();  imgs[41].src = "/img/junior/sub_03_off.gif";
	imgs[42] = new Image();  imgs[42].src = "/img/junior/sub_04_on.gif";
	imgs[43] = new Image();  imgs[43].src = "/img/junior/sub_04_off.gif";
	imgs[44] = new Image();  imgs[44].src = "/img/junior/sub_05_on.gif";
	imgs[45] = new Image();  imgs[45].src = "/img/junior/sub_05_off.gif";
	imgs[46] = new Image();  imgs[46].src = "/img/junior/sub_06_on.gif";
	imgs[47] = new Image();  imgs[47].src = "/img/junior/sub_06_off.gif";
	imgs[48] = new Image();  imgs[48].src = "/img/junior/sub_07_on.gif";
	imgs[49] = new Image();  imgs[49].src = "/img/junior/sub_07_off.gif";
	imgs[50] = new Image();  imgs[50].src = "/img/junior/sub_08_on.gif";
	imgs[51] = new Image();  imgs[51].src = "/img/junior/sub_08_off.gif";
	imgs[52] = new Image();  imgs[52].src = "/img/junior/sub_09_on.gif";
	imgs[53] = new Image();  imgs[53].src = "/img/junior/sub_09_off.gif";
	imgs[54] = new Image();  imgs[54].src = "/img/senior/sub_01_on.gif";
	imgs[55] = new Image();  imgs[55].src = "/img/senior/sub_01_off.gif";
	imgs[56] = new Image();  imgs[56].src = "/img/senior/sub_02_on.gif";
	imgs[57] = new Image();  imgs[57].src = "/img/senior/sub_02_off.gif";
	imgs[58] = new Image();  imgs[58].src = "/img/senior/sub_03_on.gif";
	imgs[59] = new Image();  imgs[59].src = "/img/senior/sub_03_off.gif";
	imgs[60] = new Image();  imgs[60].src = "/img/senior/sub_04_on.gif";
	imgs[61] = new Image();  imgs[61].src = "/img/senior/sub_04_off.gif";
	imgs[62] = new Image();  imgs[62].src = "/img/senior/sub_05_on.gif";
	imgs[63] = new Image();  imgs[63].src = "/img/senior/sub_05_off.gif";
	imgs[64] = new Image();  imgs[64].src = "/img/senior/sub_06_on.gif";
	imgs[65] = new Image();  imgs[65].src = "/img/senior/sub_06_off.gif";
	imgs[66] = new Image();  imgs[66].src = "/img/senior/sub_07_on.gif";
	imgs[67] = new Image();  imgs[67].src = "/img/senior/sub_07_off.gif";
	imgs[68] = new Image();  imgs[68].src = "/img/senior/sub_08_on.gif";
	imgs[69] = new Image();  imgs[69].src = "/img/senior/sub_08_off.gif";
	imgs[70] = new Image();  imgs[70].src = "/img/senior/sub_09_on.gif";
	imgs[71] = new Image();  imgs[71].src = "/img/senior/sub_09_off.gif";
	imgs[72] = new Image();  imgs[72].src = "/img/junior/sub_10_on.gif";
	imgs[73] = new Image();  imgs[73].src = "/img/junior/sub_10_off.gif";
	imgs[74] = new Image();  imgs[74].src = "/img/junior/sub_11_on.gif";
	imgs[75] = new Image();  imgs[75].src = "/img/junior/sub_11_off.gif";
	imgs[76] = new Image();  imgs[76].src = "/img/senior/sub_10_on.gif";
	imgs[77] = new Image();  imgs[77].src = "/img/senior/sub_10_off.gif";
	imgs[78] = new Image();  imgs[78].src = "/img/info/sub_11_on.gif";
	imgs[79] = new Image();  imgs[79].src = "/img/info/sub_11_off.gif";
	imgs[80] = new Image();  imgs[80].src = "/img/info/sub_12_on.gif";
	imgs[81] = new Image();  imgs[81].src = "/img/info/sub_12_off.gif";
	imgs[82] = new Image();  imgs[82].src = "/img/info/sub_13_on.gif";
	imgs[83] = new Image();  imgs[83].src = "/img/info/sub_13_off.gif";
	imgs[84] = new Image();  imgs[84].src = "/img/info/sub_10_on.gif";
	imgs[85] = new Image();  imgs[85].src = "/img/info/sub_10_off.gif";
	imgs[86] = new Image();  imgs[86].src = "/img/students/sub_01_on.gif";
	imgs[87] = new Image();  imgs[87].src = "/img/students/sub_01_off.gif";
	imgs[88] = new Image();  imgs[88].src = "/img/students/sub_02_on.gif";
	imgs[89] = new Image();  imgs[89].src = "/img/students/sub_02_off.gif";
	imgs[90] = new Image();  imgs[90].src = "/img/students/sub_03_on.gif";
	imgs[91] = new Image();  imgs[91].src = "/img/students/sub_03_off.gif";
	imgs[92] = new Image();  imgs[92].src = "/img/students/sub_04_on.gif";
	imgs[93] = new Image();  imgs[93].src = "/img/students/sub_04_off.gif";
	imgs[94] = new Image();  imgs[94].src = "/img/students/sub_05_on.gif";
	imgs[95] = new Image();  imgs[95].src = "/img/students/sub_05_off.gif";

}
function chgimg(id, imgname) {
	if(document.images) {
		if(imgs[imgname]) {
			document.images[id].src = imgs[imgname].src;
		}
		else {
			document.images[id].src = imgname;
		}
	}
}

//背景画像の表示切替（編集しなくても平気）
function cngFrmBG(e,image){
	if(navigator.userAgent.indexOf("MSIE 6",0) >= 0){
		var N=window.event? event.srcElement: e.target
		if (N.tagName=="INPUT")
		N.style.backgroundImage="url"+"('"+image+"')"
	} else if(navigator.userAgent.indexOf("MSIE 7",0) >= 0){
		var N=window.event? event.srcElement: e.target
		if (N.tagName=="INPUT")
		N.style.backgroundImage="url"+"('"+image+"')"
	}
}