function Hide(ele) { 
	ele=(typeof ele == "string")?document.getElementById(ele): ele;
	ele.style.display = 'none'; }

function toggleVisibility(ele){
	ele=(typeof ele == "string")?document.getElementById(ele): ele;
	ele.style.visibility=(ele.style.visibility !='visible')?'visible':'hidden';	
}
function toggleDisplay(ele){
	ele=(typeof ele == "string")?document.getElementById(ele): ele;
	ele.style.display=(ele.style.display !='none')?'none':'block';	
}


function chkForm(form)
{
var chkReq = new Array ("activity","description","details","location");
var chkReqNames = new Array ("Activity","Description","Details","Location");

for (i=0;i< chkReq.length; i++)
{
var chkThis = chkReq[i];
if (form[chkThis].value == "") {
alert("Please fill in the " + chkReqNames[i] + " form field.");
form[chkThis].focus();
return false;
}
}

};