function getComboValue(fld)
{
	sel = fld.options[fld.options.selectedIndex].value;
	if(sel == null)
		return("");
	else
		return(sel);
}

function getRadioValue(radiofield){
	for(i=0; i<radiofield.length; i++){
		if(radiofield[i].checked){
			return radiofield[i].value;
		}
	}
	return "";
}

function getChecked(chkName, objForm) {

	if( objForm == null ||	 chkName == "" || chkName == null || chkName == "undefined" )
		objForm = document.forms[0];
		
	var items = objForm.elements;
	if( items == null) 
		return( null);

	var chkVals = new Array();
	var cnt = 0;
	for( var i = 0 ; i < items.length ; i++ ) {
		if( (items[i].name.toLowerCase() == chkName.toLowerCase()) && items[i].type == "checkbox") {
			//if it is checked, and not undefined, then we add it to the return value.
			if( items[i].checked && (items[i].value != "" || items[i].value != "undefined" )) {
				chkVals[cnt] = items[i].value;
				cnt++;
			}
		}    
	}
	return( chkVals );
}

function isChecked(chkName, strValue)
{
	arrList = getChecked(chkName);
	for(var i = 0 ; i < arrList.length ; i++ ) {
		if(arrList[i] == strValue)
			return true;
	}
	return false;
}

function isNumberValue(aNum, emptyOK, strDecSep, strThousSep){ 

	var isNum = true;
	
	if(strDecSep == null)
		strDecSep = ",";
	if(strThousSep == null)
		strThousSep = ".";
	if(emptyOK == null)
		emptyOK= true;
		
	aNum+="";
	if( aNum == "undefined")
		return false;
	if(aNum == "" && emptyOK == true)
		return true

	//Return false for any strings that don't pass the "isNaN" check:
	if( isNaN( parseInt( aNum) ) )
		isNum = false;

	//Allow for there to be a negative sign as the first character 
	if( aNum.substring( 0, 1) == "-" ) 
		aNum = aNum.substring( 1, aNum.length);

	//Return false for any strings that contain letters within them:
	for( var i = 0; i < aNum.length; i++ ) {
		if( (aNum.charAt(i) < "0" || aNum.charAt(i) > "9") & (aNum.charAt(i) != strDecSep ) & (aNum.charAt(i) != strThousSep) ) {
			isNum=false;
			break;
		}
	}

	return( isNum);
}

function openDbRelativeURL( url, target ){
 //Check we have a target window;
 target = (target == null ) ? window : target;
 //Work out the path of the database;
 path = location.pathname.split('.nsf')[0] + '.nsf/';
 target.location.href = path + url;
}

function getDbRelativeURL(){
 path = location.pathname.split('.nsf')[0] + '.nsf/';
 return path;
}

function runAction(action) {
	for (var i=0;i<document.links.length;i++) { 
		if(document.links[i].target==action){ //scan all links until the requested link is found 
			document.links[i].target='' //reset target tag to reference the current window
			document.links[i].onclick(); //activate the link 
			return true;
		}
	}
	return false;  //If link was not found false is returned
}

function windowOpener(url, name, args) {
	//if args is null set args as empty string
	args = (args == null) ? "" : args;
	
	if (typeof(popupWin) != "object"){
		popupWin = window.open(url,name,args);
	} else {
		if (!popupWin.closed){ 
			popupWin.location.href = url;
		}else {
			popupWin = window.open(url, name,args);
		}
	}
	
	popupWin.focus();
}

function getWindowCenterParam(width, height) {
    if (document.all)
        var xMax = screen.width, yMax = screen.height;
    else
        if (document.layers)
            var xMax = window.outerWidth, yMax = window.outerHeight;
        else
            var xMax = 640, yMax=480;

    var xOffset = (xMax - width)/2;
    var yOffset = (yMax - height)/2;

    return 'screenX='+xOffset+', screenY='+yOffset+',top='+yOffset+',left='+xOffset+'';
}