window.onload = initForm;

function initForm() {
	document.getElementById("jumpMenu").selectedIndex = 0;
	document.getElementById("jumpMenu").onchange = showDiv;
	//hideDivs;
}

var divs = new Array('k1','k2','1a','1b','2a','2b','3a','3b','4a','4b','5a','5b','6a','6b','7a','7b','8a','8b','resource'); 

function hideDivs() { 
        for (var i=0; i<divs.length; i++) {
          var curDiv = document.getElementById(divs[i]).style.display = 'none';
				}
} 

function showDiv() { 
  hideDivs(); //hide all divs in array

	var selectedDiv = document.getElementById("jumpMenu");
	var newDiv = selectedDiv.options[selectedDiv.selectedIndex].value;
	var div = document.getElementById(newDiv).style.display = 'block'; 
}