function findHelpY(hDirect) {
	var hTop = 0;
			
	if(hDirect.offsetParent) {
		while(hDirect.offsetParent) {
			hTop += hDirect.offsetTop
			hDirect = hDirect.offsetParent;
		}
	} else if(hDirect.y) {
		hTop += hDirect.y;
	}
	return hTop;
}

function showHelp() {
	helpTop = document.getElementById('help_button');

	document.getElementById('help_data').className = 'div_help_on';
	document.getElementById('help_data').style.top = findHelpY(helpTop) + 2 + 'px';
	document.getElementById('help_data').style.left = 705 + 'px';
	hide('proximitySelectBoxMain');
}

function closeHelp() {
	document.getElementById('help_data').className = 'div_help_off';
	show('proximitySelectBoxMain');
}

function hide(id) {
	if ( document.getElementById(id) ) {
		document.getElementById(id).style.display = 'none' ;
	}
}

function show(id) {
	if ( document.getElementById(id) ) {
		document.getElementById(id).style.display = 'block' ;
	}
}