/* arcplan image swap routine */

function sw(objName) {
	
	var e = document.getElementById(objName);
	
	if (e.src.indexOf("_over") > 0) {
		
		var newFilename = e.src.substr(0,e.src.indexOf("_over"));
		newFilename += e.src.substr(e.src.indexOf(".gif"),4);
		
	} else {

		var newFilename = e.src.substr(0,e.src.indexOf(".gif"));
		newFilename += "_over.";
		newFilename += e.src.substr(e.src.indexOf(".gif") + 1,3);

	}

	e.src = newFilename;
	
}