bts=new Array()
bts[0]="home_bt"
bts[1]="about_bt"
bts[2]="product_bt"
bts[3]="solution_bt"
bts[4]="download_bt"
bts[5]="contact_bt"
bts[6]="map_bt"

bts_on=new Array()
bts_on[0]="home_bt_on"
bts_on[1]="about_bt_on"
bts_on[2]="product_bt_on"
bts_on[3]="solution_bt_on"
bts_on[4]="download_bt_on"
bts_on[5]="contact_bt_on"
bts_on[6]="map_bt_on"

function tabHid(a) {
	for (var i = 0; i < bts.length; i++) {
		var layer = document.getElementById(bts[i]);
		var off = document.getElementById(bts_on[i]);
		if (a!= bts[i]) {
			layer.style.display = "block";
			off.style.display = "none";
		} else {
			layer.style.display = "none";
			off.style.display = "block";
		}
	}
	
}