function popupOptions()
{
    this.height         = screen.availHeight;
    this.width          = screen.availWidth;
    this.top            = 0;
    this.left           = 0;
    this.toolbar        = false;
    this.location       = false;
    this.directories    = false;
    this.status         = false;
    this.menubar        = false;
    this.scrollbars     = false;
    this.resizable      = false;
    this.dependent      = false;
    
    this.build          = _buildOptions;
}

function _buildOptions()
{
    var sTemp = "";
    
    sTemp += "height=" + this.height + ",";
    sTemp += "width=" + this.width + ",";
    sTemp += "top=" + this.top + ",";
    sTemp += "left=" + this.left + ",";
    sTemp += "toolbar=" + ((this.toolbar) ? "yes" : "no") + ",";
    sTemp += "location=" + ((this.location) ? "yes" : "no") + ",";
    sTemp += "directories=" + ((this.directories) ? "yes" : "no") + ",";
    sTemp += "status=" + ((this.status) ? "yes" : "no") + ",";
    sTemp += "menubar=" + ((this.menubar) ? "yes" : "no") + ",";
    sTemp += "scrollbars=" + ((this.scrollbars) ? "yes" : "no") + ",";
    sTemp += "resizable=" + ((this.resizable) ? "yes" : "no") + ",";
    sTemp += "dependent=" + ((this.dependent) ? "yes" : "no");
    
    return(sTemp);
}

function popup(){
    var winlink      = arguments[0];
    var winname      = arguments[1];
    var winwidth     = arguments[2];
    var winheight    = arguments[3];
    var winscroll    = true;
    var wintoolbar   = true;
    var winresize = true;
    
    winscroll = (arguments[4] == '1') ? true : false;

    if (arguments.length >= 5)
    {
		if(arguments.length >= 6)
		{
			wintoolbar = (arguments[5] == '1') ? true : false;
		}
		if(arguments.length >= 7)
		{
			winresize = (arguments[6] == '1') ? true : false;
		}
    }
    
    // test alerts
    //alert(winlink);
    
    var iLeft   = ((screen.availWidth / 2) - (winwidth / 2));
	var iTop    = ((screen.availHeight / 2) - (winheight / 2));

	var oWin    = null;
    var oOption = new popupOptions();

    oOption.height = winheight;
    oOption.width = winwidth;
    oOption.top = iTop;
    oOption.left = iLeft;
    oOption.toolbar = wintoolbar;
    oOption.location = false;
    oOption.directories = false;
    oOption.status = false;
    oOption.menubar = false;
    oOption.scrollbars = winscroll;
    oOption.resizable = winresize;
    oOption.dependent = false;
    
    var sOptions = oOption.build();

    oWin = window.open(((typeof(winlink) == "string") ? winlink : winlink.href), winname, sOptions);
    oWin.focus();
    var sHardCoded = 'var oWin = window.open("' + ((typeof(winlink) == "string") ? winlink : winlink.href) + '", "' + winname + '", "' + sOptions + '")';
//    alert(sHardCoded);
//    return(false);
}

function rollover(img_name, img_src){
	document[img_name].src=img_src;
}

//dhtml image rollover
function divObject(label){
	if (document.getElementById){
		return(document.getElementById(label).style);
	}else{
		return(null);
	}
}