function hidediv(id)
{
	//safe function to hide an element with a specified id
	if (document.getElementById) { // DOM3 = IE5, NS6
		document.getElementById(id).style.display = 'none';
	}
	else {
		if (document.layers) { // Netscape 4
			document.id.display = 'none';
		}
		else { // IE 4
			document.all.id.style.display = 'none';
		}
	}
}

function showdiv(id)
{
	//safe function to show an element with a specified id
	if (document.getElementById) { // DOM3 = IE5, NS6
		document.getElementById(id).style.display = 'block';
	}
	else {
		if (document.layers) { // Netscape 4
			document.id.display = 'block';
		}
		else { // IE 4
			document.all.id.style.display = 'block';
		}
	}
}

function setclass(id, class_value)
{
	if (document.getElementById) { // DOM3 = IE5, NS6
		document.getElementById(id).setAttribute('class',class_value);
	}
	else {
        document.all.id.setAttribute('class',class_value);
	}
}

function checkIt(field)
{
    if (field) {
        field.checked = true;
    }
}

function uncheckIt(field)
{
    if (field) {
	    field.checked = false;
    }
}

function SetAllCheckBoxes(FormName, CheckValue)
{
    dml = document.forms[FormName];
    len = dml.elements.length;

    var i = 0;

    for( i=0 ; i<len ; i++) {
        dml.elements[i].checked = CheckValue;
    }
}

function confirm_submit(question)
{
    var agree = confirm(question);
    if (agree)
	   return true ;
    else
	   return false ;
}