defaultStatus = "The Rockfish Restaurant - Annapolis, Maryland";

function setMsg(msg) {
    window.status = msg;
    return true;
}

// toggle visibility
function toggle (targetId) {
	if (document.getElementById) {
		target = document.getElementById (targetId);
			if(target.style.display == "none") {
				target.style.display = "";
			} else {
				target.style.display = "none";
			}
	}
}

// pop-up windows
function popUpWindow(URLStr, width, height) {
  popUpWin = open(URLStr, 'popUpWin', 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbar=no,resizable=no,copyhistory=no,width='+width+',height='+height+',left=100, top=100');
	popUpWin.focus();
}
function newWindow(URLStr, left, top, width, height) {
  newWin = open(URLStr, 'newWin', 'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbar=yes,resizable=yes,copyhistory=yes,width='+width+',height='+height+',left='+left+', top='+top+',screenX='+left+',screenY='+top+'');
	newWin.focus();
}

// ensures only numbers are entered into form fields
function numeralsOnly(evt) {
    evt = (evt) ? evt : event;
    var charCode = (evt.charCode) ? evt.charCode : ((evt.keyCode) ? evt.keyCode : 
        ((evt.which) ? evt.which : 0));
    if (charCode > 31 && (charCode < 48 || charCode > 57)) {
        alert("Please enter numbers only.");
        return false;
    }
    return true;
}

/****************************************************
						tabbed page navigation 
*****************************************************/

var currentPanel;

function showPanel(panelNum) {
	//hide visible panel, show selected panel, 
	//set tab
	if (currentPanel != null) {
		 hidePanel();
	}
	document.getElementById 
		 ('panel'+panelNum).style.visibility = 'visible';
		 currentPanel = panelNum;
		 setState(panelNum);
}

function hidePanel() {
	//hide visible panel, unhilite tab
	document.getElementById
		('panel'+currentPanel).style.visibility = 
		 'hidden';
	document.getElementById
		('tab'+currentPanel).style.backgroundColor = 
		'#ffffff';
	document.getElementById
		('tab'+currentPanel).style.color = 'navy';
}

function setState(tabNum) {
	if (tabNum==currentPanel) {
		 document.getElementById 
			 ('tab'+tabNum).style.backgroundColor = 
			 '#ddddff';
		 document.getElementById
			 ('tab'+tabNum).style.color = 'red';
	}
	else {
		 document.getElementById
			 ('tab'+tabNum).style.backgroundColor = 
			 '#ffffff';
		 document.getElementById
			 ('tab'+tabNum).style.color = 'navy';
	}
}

function hover(tab) {
	tab.style.backgroundColor = 'ddddff';
}

/****************************************************
						alternating table rows 
*****************************************************/

// this function is needed to work around 
// a bug in IE related to element attributes
function hasClass(obj) {
	 var result = false;
	 if (obj.getAttributeNode("class") != null) {
			 result = obj.getAttributeNode("class").value;
	 }
	 return result;
}   

function stripe(id) {

	// the flag we'll use to keep track of 
	// whether the current row is odd or even
	var even = false;

	// if arguments are provided to specify the colours
	// of the even & odd rows, then use the them;
	// otherwise use the following defaults:
	var evenColor = arguments[1] ? arguments[1] : "#fff";
	var oddColor = arguments[2] ? arguments[2] : "#E0E0E0";

	// obtain a reference to the desired table
	// if no such table exists, abort
	var table = document.getElementById(id);
	if (! table) { return; }
	
	// by definition, tables can have more than one tbody
	// element, so we'll have to get the list of child
	// &lt;tbody&gt;s 
	var tbodies = table.getElementsByTagName("tbody");

	// and iterate through them...
	for (var h = 0; h < tbodies.length; h++) {
	
	 // find all the &lt;tr&gt; elements... 
		var trs = tbodies[h].getElementsByTagName("tr");
		
		// ... and iterate through them
		for (var i = 0; i < trs.length; i++) {

			// avoid rows that have a class attribute
			// or backgroundColor style
			if (! hasClass(trs[i]) &&
					! trs[i].style.backgroundColor) {
		
				// get all the cells in this row...
				var tds = trs[i].getElementsByTagName("td");
			
				// and iterate through them...
				for (var j = 0; j < tds.length; j++) {
			
					var mytd = tds[j];

					// avoid cells that have a class attribute
					// or backgroundColor style
					if (! hasClass(mytd) &&
							! mytd.style.backgroundColor) {
			
						mytd.style.backgroundColor =
							even ? evenColor : oddColor;
					
					}
				}
			}
			// flip from odd to even, or vice-versa
			even =  ! even;
		}
	}
}

function checkall(objForm){
	len = objForm.elements.length;
	var i=0;
	for( i=0 ; i<len ; i++) {
		if (objForm.elements[i].type=='checkbox') {
			objForm.elements[i].checked=objForm.check_all.checked;
		}
	}
}