//	browser detect
var isNav, isIE ;
if ( parseInt( navigator.appVersion ) < 4 ) {
	window.top.close() ;
} else {
	isNav = ( navigator.appName == "Netscape" ) ;
	isIE = ( navigator.appName.indexOf( "Microsoft" ) != -1 ) ;
	if ( isNav ) {
		document.captureEvents( Event.MOUSEDOWN | Event.LOAD | Event.UNLOAD ) ;
	} else if (isIE == false ) {
		window.top.close ;
	}
}
//	security related functions
//	we want to disable right click to secure our source code
//	in IE 4/5 a simple alert can be sidestepped using the keyboard whilst keeping
//	the right mouse button down. This is more robust
//	Netscape is easier to deal with
// amended Feb to deal with DOM browsers
function noRightClick( e )
{
	if ( window.event ) e = event ;
	if ( document.getElementById ) {
		// DOM browsers
		document.oncontextmenu = function() { e.returnValue = false ; return false ; } ;
	} else 	if ( isIE ) {
		// IE4
		if ( event.button == 2 || event.button == 3 ) {
			do {
				window.status = "" ;
			} while ( showModalDialog( "//EatKeysPage", 0, "dialogWidth:280px; dialogHeight:180px; center:yes;" ) != true )
			return false ;
		}
	} else if ( isNav ) {
		// NN4
		if ( e.which == 2 || e.which == 3 ) {
			return false ;
		}
	}
}
document.onmousedown = noRightClick ;
// redirects to safe place unless called from appropriate URL
function whereCalledFrom( from ) {
	var s = document.forms[0].HTTP_Referer.value ;
	var i = s.lastIndexOf( "/" ) + 1 ;
	if ( s.substr(i).toLowerCase().split("?")[0]  == from.toLowerCase() ) {
		// called from legal place so OK
	} else {
		// not called from menu so go to database default opening
		location.href = "" ;
	}	
}
// 	Application Control issues
// open in a new window
function openDoc( URL, win, features ) {
    if (URL=="") return false ;
    var newwin ;
    if (win=="") win="_" ;
    if (features=="") {
        features="menubar,toolbar,resizable,scrollbars,height=500,width=750"
    }
    if ( document.forms[0].name == "_Test" ) {
        // override hard coded figures for OpenNoteURL in test questions
        if ( screen.width==800 ) features = "resizable,height=440,width=600,top=10,left=1" ;
        if ( screen.width>800 ) features = "resizable,height=500,width=770,top=80,left=220" ;
    }
    newwin = window.open( URL, win, features )
    newwin.focus() ;
}
// allows display of radio & checkbox but refuse edit
function noEdit( obj ) {
	var r = eval ( "document.forms[0].elements." + obj.name ) ;
	for ( var i=0 ; i<r.length ; i++ ) {
		if ( r[i].defaultChecked ) {
			r[i].checked = true ;
		} else {
			r[i].checked = false ;
		}
	}
}
//	Field Validation
// refuse to leave unless we have a valid date format asdd/mm/yyyy
function checkDateFormat( fieldName ) {
	var obj = eval( "document.forms[0].elements." + fieldName ) ;
	var regExp = /[0-9][0-9]\/[0-9][0-9\/200[1-9]/ ;
	if ( regExp.test( obj.value)==false ) {
		obj.focus() ;
		alert( "Bad date format " + obj.name + " : pls use dd/mm/yyyy" ) ;
		return false ; 
	}
	return true ;
}
// refuse to leave unless we have a valid time format as hh:mm
function checkTimeFormat( fieldName ) {
	var obj = eval( "document.forms[0].elements." + fieldName ) ;
	var regExp = /[0-9][0-9]:[0-9][0-9]/ ;
	if ( regExp.test( obj.value)==false ) {
		obj.focus() ;
		alert( "Bad time format " + obj.name + " : pls use hh:mm" ) ;
		return false ; 
	}
	return true ;
}
// refuse to leave unless we have a valid integer
function checkIntegerFormat( fieldName, min, max ) {
	var obj = eval( "document.forms[0].elements." + fieldName ) ;
	// empty fields are usually OK
	if (obj.value == "" ) return true ;
	if ( obj.value*0 != 0 ) {
		obj.focus() ;
		alert( "Bad integer format in " + obj.name ) ;
		return false ; 
	} else {
		if ( obj.value < min | obj.value > max ) {
			obj.focus() ;
			alert( "Integer in " + obj.name + " must lie between " + min + " and " + max ) ;
			return false ; 
		} else {
			return true ;
		}
	}
}
// refuse to leave unless we have a reasonable entry
function checkMandatoryField( fieldName, minLen ) {
	var obj = eval( "document.forms[0].elements." + fieldName ) ;
	if ( obj.value.length<minLen ) {
		obj.focus() ;
		alert( obj.name + " is too short, min length is " + minLen ) ;		
		return false ;
	}	
	return true ;
}
//	Page Display and Management
//	change Domino view twisties for an alternative icon
function changeTwisties(  ) {
	var i, nullcount ;
	var expand = new Image() ;
	expand.src = '/icons/plus.gif' ; 
	var collapse = new Image() ; 
	collapse.src = '/icons/minus.gif' ;
	nullcount = 1;  
	while (nullcount) {
		nullcount = 0 ;
		for (i = 0;  i < document.images.length;  i++) {
			if (document.images[i].src == null) {
				nullcount++ ;
			} else {
				 if (document.images[i].src.indexOf('expand.gif') > 0) 
					document.images[i].src = expand.src ; 
				else if (document.images[i].src.indexOf('collapse.gif') > 0)
					document.images[i].src = collapse.src ;
			}
		}
	}
}
function retargetLinks( target ) {
	var i, nullcount, tmp ;
	nullcount = 1;  
	while (nullcount) {
		nullcount = 0 ;
		for (i = 0;  i < document.links.length;  i++) {
			if (document.links[i].href == "" ) {
				nullcount++ ;
			} else {
				if ( document.links[i].href.indexOf('?OpenDocument') > 0) {
					// this is the link we want to modify
					document.links[i].target = target ;
				}
			}
		}
	}
}
// used to put a custom label at the top of a view column
// needs a javascript hidden labels field on the form with embedded view
function doLabel( col ) {
	var obj = eval( "document.forms[0].labels" ) ;
	if ( obj ) {
		var tmp = eval( "document.forms[0].labels.value.split(',')[" + col + "]" ) ;
		document.write( "<DIV CLASS='user'>" + tmp + "</DIV>" ) ;
	}
}