.help .img1{
	background-image: url(../../image/help/web_ch_1.png);
}
.help .img2{
	background-image: url(../../image/help/web_ch_2.png);
}
.help .img3{
	background-image: url(../../image/help/web_ch_3.png);
}
.help .img1_m{
	background-image: url(../../image/help/web_ch_1_m.png);
}
.help .img2_m{
	background-image: url(../../image/help/web_ch_2.png);
}
.help .img3_m{
	background-image: url(../../image/help/web_ch_3.png);
}