/*========== float ==========*/
.float_l{
	float:left;
}
.float_r{
	float:right;
}
/*========== align ==========*/
.align_l{
	text-align:left;
}
.align_r{
	text-align:right;
}
.align_c{
	text-align:center;
}
/*========== clear ==========*/
.clear{
	clear:both;
}
.clearfix{
	zoom:1;/*for IE 5.5-7*/
}
.clearfix:after{/*for modern browser*/
	content:".";
	display: block;
	height:0px;
	clear:both;
	visibility:hidden;
}