//function to display or hide a given element
    function showHideItems(myItemShow, myItemHide){

	if (myItemShow != '') {
    //this is the ID of the hidden item
    var myItemShow = document.getElementById(myItemShow);
			//items are currently hidden, so display them
            myItemShow.style.display = "";
	} 
    if (myItemHide != '') {
    //this is the ID of the shown item
    var myItemHide = document.getElementById(myItemHide);

            //items are currently displayed, so hide them
            myItemHide.style.display = "none";
			}
    }
	function textCounter(field,cntfield,maxlimit) {
		if (field.value.length > maxlimit) // if too long...trim it!
			field.value = field.value.substring(0, maxlimit);
		// otherwise, update 'characters left' counter
		else
			cntfield.value = maxlimit - field.value.length; 
	}
	
	//function to display/hide gig form on contact page
    function ContactHire(){
	if (document.ContactForm.Contact_Perform_Event.checked == true)
		{
			document.ContactForm.Contact_Invite_College.disabled=true;
		}
	else
		{ 
			document.ContactForm.Contact_Invite_College.disabled=false;
		}
	
	
    var myItemHire = document.getElementById("Hire8ttb");
		if (myItemHire.style.display == "none"){
            myItemHire.style.display = "";
		}else{
			myItemHire.style.display = "none";
		}
		
	var myItemEventHeader = document.getElementById("EventHeader");
		if (myItemEventHeader.style.display == "none"){
            myItemEventHeader.style.display = "";
		}else{
			myItemEventHeader.style.display = "none";
		}
			
    var myItemGroup = document.getElementById("StudGroup");
            myItemGroup.style.display = "none";
			
    var myItemDetails = document.getElementById("EventDetails");
		if (myItemDetails.style.display == "none"){
            myItemDetails.style.display = "";
		}else{
			myItemDetails.style.display = "none";
		}			
	}
	
	function ContactGroup(){

	if (document.ContactForm.Contact_Invite_College.checked == true)
		{
			document.ContactForm.Contact_Perform_Event.disabled=true;
		}
	else
		{ 
			document.ContactForm.Contact_Perform_Event.disabled=false;
		}

    var myItemGroup = document.getElementById("StudGroup");
		if (myItemGroup.style.display == "none"){
            myItemGroup.style.display = "";
		}else{
			myItemGroup.style.display = "none";
		}
		
	var myItemEventHeader = document.getElementById("EventHeader");
		if (myItemEventHeader.style.display == "none"){
            myItemEventHeader.style.display = "";
		}else{
			myItemEventHeader.style.display = "none";
		}
			
    var myItemHire = document.getElementById("Hire8ttb");
            myItemHire.style.display = "none";
			
    var myItemDetails = document.getElementById("EventDetails");
		if (myItemDetails.style.display == "none"){
            myItemDetails.style.display = "";
		}else{
			myItemDetails.style.display = "none";
		}			
	}