/* ******************************************************* */
/* Index Tree Expantion (Plus and Minus Kirikae) */

function expTree(){
	if(document.layers){
		return;
	}
	var obj = arguments[0];      //Hikikisu
	var inSel = arguments[1];    // add SelectNo
	var inSta = arguments[2];    // add StartNo
	var inMax = arguments[3];    // add MaxNo
	var i;                       // add 
	var objwk,objwkImg;          // add 
	
	var objImg = obj + "_img"; //Icon ID
	var path = document.getElementById(objImg).src;
	end = path.lastIndexOf("/");
	//var objImgSrc = obj.substring(0,5);//Icon Gazou Namae Shutoku
	path = path.substring(0,end+1);//Icon Gazou Path Shutoku

    // OPEN
	if(document.getElementById(obj).style.display != "block")
	{
	    for (i=inSta; i<=inMax; i=i+1)
	    {
	        if(i!=inSel)
	        {
	            objwk = obj.substring(0,4);
	            objwk = objwk + i;
	            objwkImg = objwk + "_img";
	            document.getElementById(objwk).style.display = "none";
		        document.getElementById(objwkImg).src = path + "tree_plus.gif";
	        }
        }
	
		document.getElementById(obj).style.display = "block";
		document.getElementById(objImg).src = path + "tree_minus.gif";
	}
	// CLOSE
	else
	{
		document.getElementById(obj).style.display = "none";
		document.getElementById(objImg).src = path + "tree_plus.gif";
	}
	return;
}