function void_click() {
return false
}

function show_submenu(elid) {
  var elid_block="block_"+elid
	if (document.getElementByID[elid_block].style.display=="block") {
		document.getElementByID[elid_block].style.display="none"
	}
	else {
		document.getElementByID[elid_block].style.display="block"
	}
}