function ThrowEvent(mainevent, mainvalue)
{
	document.systemform.event_main.value = mainevent;
	document.systemform.event_mainvalue.value = mainvalue;
	document.systemform.submit();
}

function ThrowEventConfirm(mainevent, mainvalue, confirmtext)
{
	if (confirm(confirmtext))
	{
		ThrowEvent(mainevent, mainvalue)
	}
}
	
function ThrowEventNew(mainevent, mainvalue, text, suggest)
{
    if (suggest == null)
    {
        suggest = '';
    }

	input = prompt(text, suggest);
	if (input != null)
	{	
    	if (mainvalue != '')
		{
			ThrowEvent(mainevent, mainvalue + '*' + input)
		}
		else
		{
			ThrowEvent(mainevent, input)	
		}
	}
}

function showAndHide(showLayerId, hideLayerId) 
{
    setDisplay(showLayerId, "block");
    setDisplay(hideLayerId, "none");
}

function setDisplay(whichElement, newValue)
{
    if (document.getElementById)
    {
        // this is the way the standards work
        var style2 = document.getElementById(whichElement).style;
        style2.display = newValue;
    }
    else if (document.all)
    {
        // this is the way old msie versions work
        var style2 = document.all[whichElement].style;
        style2.display = newValue;
    }
    else if (document.layers)
    {
        // this is the way nn4 works
        var style2 = document.layers[whichElement].style;
        style2.display = newValue;
    }
}