function ShowDiv(){
                    safeToggleFieldDisplay(document.getElementById('1'),'none');
                    safeToggleFieldDisplay(document.getElementById('2'),'none');
                    safeToggleFieldDisplay(document.getElementById('3'),'none');
                    safeToggleFieldDisplay(document.getElementById('4'),'none');
					safeToggleFieldDisplay(document.getElementById('5'),'none');
					safeToggleFieldDisplay(document.getElementById('6'),'none');
					safeToggleFieldDisplay(document.getElementById('7'),'none');
					safeToggleFieldDisplay(document.getElementById('8'),'none');
					safeToggleFieldDisplay(document.getElementById('9'),'none');
					safeToggleFieldDisplay(document.getElementById('10'),'none');
					safeToggleFieldDisplay(document.getElementById('11'),'none');
					safeToggleFieldDisplay(document.getElementById('40'),'none');
					safeToggleFieldDisplay(document.getElementById('51'),'none');
					safeToggleFieldDisplay(document.getElementById('12'),'none');
					safeToggleFieldDisplay(document.getElementById('13'),'none');
					safeToggleFieldDisplay(document.getElementById('14'),'none');
					safeToggleFieldDisplay(document.getElementById('15'),'none');
					safeToggleFieldDisplay(document.getElementById('16'),'none');
					safeToggleFieldDisplay(document.getElementById('17'),'none');
					safeToggleFieldDisplay(document.getElementById('52'),'none');
					safeToggleFieldDisplay(document.getElementById('18'),'none');
					safeToggleFieldDisplay(document.getElementById('19'),'none');
					safeToggleFieldDisplay(document.getElementById('20'),'none');
					safeToggleFieldDisplay(document.getElementById('21'),'none');
					safeToggleFieldDisplay(document.getElementById('22'),'none');
					safeToggleFieldDisplay(document.getElementById('24'),'none');
					safeToggleFieldDisplay(document.getElementById('25'),'none');
					safeToggleFieldDisplay(document.getElementById('26'),'none');
					safeToggleFieldDisplay(document.getElementById('27'),'none');
					safeToggleFieldDisplay(document.getElementById('28'),'none');
					safeToggleFieldDisplay(document.getElementById('29'),'none');
					safeToggleFieldDisplay(document.getElementById('30'),'none');
					safeToggleFieldDisplay(document.getElementById('31'),'none');
					safeToggleFieldDisplay(document.getElementById('32'),'none');
					safeToggleFieldDisplay(document.getElementById('33'),'none');
					safeToggleFieldDisplay(document.getElementById('34'),'none');
					safeToggleFieldDisplay(document.getElementById('35'),'none');
					safeToggleFieldDisplay(document.getElementById('36'),'none');
					safeToggleFieldDisplay(document.getElementById('37'),'none');
					safeToggleFieldDisplay(document.getElementById('38'),'none');
					safeToggleFieldDisplay(document.getElementById('39'),'none');
					safeToggleFieldDisplay(document.getElementById('53'),'none');

                    var dropdown = document.getElementById("ContentListBox");
                    var index = dropdown.selectedIndex;
                    var selectedDIV = dropdown.options[index].value;
                    safeToggleFieldDisplay(document.getElementById(selectedDIV),'flip');
                }
                
                function safeToggleFieldDisplay(field, sVisibility){
                    try{
	                    if((field) && (field.style)){
	                        if (sVisibility=='flip'){
                                if (field.style.display == 'none'){
                                    sVisibility = 'block'; }
                                else {
                                    sVisibility = 'none'; }
                            }
		                    field.style.display = sVisibility;
	                    }
                    }
                    catch(exception){
	                    //no handling - just preventing page explosions
                    }
                }

                ShowDiv();
				<!-- Begin
function checkAll(field)
{
for (i = 0; i < field.length; i++)
	field[i].checked = true ;
}

function uncheckAll(field)
{
for (i = 0; i < field.length; i++)
	field[i].checked = false ;
}
function restrangeRezultate()
{
	var tabel = document.getElementById('tabel2');
	var rezultate = tabel.getElementsByTagName('table');
	var count = '';
	if (7 > rezultate.length) { count = rezultate.length; } else { count = 7; }
	for (i=count; i<rezultate.length; i++)
	{
		rezultate[i].style.display = 'none';
	}
	for (i=0; i<count; i++)
	{
		rezultate[i].style.display = '';
	}
}
function showResult(nr)
{
	if (nr == 1)
	{
		restrangeRezultate();
	}
	else
	{
		if (nr == 'all')
		{
			var tabel = document.getElementById('tabel2');
			var rezultate = tabel.getElementsByTagName('table');
			for (i=0; i<rezultate.length; i++)
			{
				rezultate[i].style.display = '';
			}
		}
		else
		{
			var tabel = document.getElementById('tabel2');
			var rezultate = tabel.getElementsByTagName('table');
			var max = parseInt(7 * nr + 1);
			var nr_aux = parseInt(nr - 1);
			var min = parseInt(7 * nr_aux);
			for (i=0; i<rezultate.length; i++)
			{
				if (i>min && i<max) { rezultate[i].style.display = ''; } else { rezultate[i].style.display = 'none'; }
			}
		}
	}
}
//  End -->