function showLayer(layer){
var myList = new Array();
myList[0] = "sm_1";
myList[1] = "sm_2";
myList[2] = "sm_3";
myList[3] = "sm_4";
myList[4] = "sm_5";
myList[5] = "sm_6";
myList[6] = "sm_7";
myList[7] = "sm_8";
myList[8] = "sm_9";

for (i=0;i<myList.length;i++)
{
	
		if(isActive == layer){
			document.getElementById(layer).style.display ="block";
		} else if(myList[i] == layer){
				document.getElementById(layer).style.display ="block";
		}else{
				document.getElementById(myList[i]).style.display ="none";
		}
	}
	
}


function hideLayer(layer){
	document.getElementById(layer).style.display = "none";

	document.getElementById(isActive).style.display ="block";

}