toolbox = new Image (110,18);
toolbox.src = "/images/scirc/b_toolbox.gif"
toolboxh = new Image (110,18);
toolboxh.src = "/images/scirc/b_toolboxh.gif"
databases = new Image (110,18);
databases.src = "/images/scirc/b_databases.gif"
databasesh = new Image (110,18);
databasesh.src = "/images/scirc/b_databasesh.gif"
help = new Image (110,18);
help.src = "/images/scirc/b_help.gif"
helph = new Image (110,18);
helph.src = "/images/scirc/b_helph.gif"
research = new Image (110,18);
research.src = "/images/scirc/b_research.gif"
researchh = new Image (110,18);
researchh.src = "/images/scirc/b_researchh.gif"
dict = new Image (110,18);
dict.src = "/images/scirc/b_dict.gif"
dicth = new Image (110,18);
dicth.src = "/images/scirc/b_dicth.gif"
sources = new Image (110,18);
sources.src = "/images/scirc/b_sources.gif"
sourcesh = new Image (110,18);
sourcesh.src = "/images/scirc/b_sourcesh.gif"
timeline = new Image (110,18);
timeline.src = "/images/scirc/b_timeline.gif"
timelineh = new Image (110,18);
timelineh.src = "/images/scirc/b_timelineh.gif"
marklist = new Image (110,18);
marklist.src = "/images/scirc/b_marklist.gif"
marklisth = new Image (110,18);
marklisth.src = "/images/scirc/b_marklisth.gif"
marklistfull = new Image (110,18);
marklistfull.src = "/images/scirc/b_marklist_full.gif"
marklistfullh = new Image (110,18);
marklistfullh.src = "/images/scirc/b_marklist_fullh.gif"
backlib = new Image (110,18);
backlib.src = "/images/scirc/b_backlib.gif"
backlibh = new Image (110,18);
backlibh.src = "/images/scirc/b_backlibh.gif"

search = new Image (110,18);
search.src = "/images/scirc/b_search_top.gif"
searchh = new Image (110,18);
searchh.src = "/images/scirc/b_search_toph.gif"
search2 = new Image (110,18);
search2.src = "/images/scirc/b_search.gif"
search2h = new Image (110,18);
search2h.src = "/images/scirc/b_searchh.gif"
clear = new Image (110,18);
clear.src = "/images/scirc/b_clear.gif"
clearh = new Image (110,18);
clearh.src = "/images/scirc/b_clearh.gif"
clear2 = new Image (110,18);
clear2.src = "/images/scirc/b_clear.gif"
clear2h = new Image (110,18);
clear2h.src = "/images/scirc/b_clearh.gif"
clear2a = new Image (110,18);
clear2a.src = "/images/scirc/b_clear.gif"
clear2ah = new Image (110,18);
clear2ah.src = "/images/scirc/b_clearh.gif"
viewHistory = new Image (110,18);
viewHistory.src = "/images/scirc/b_viewhist.gif"
viewHistoryh = new Image (110,18);
viewHistoryh.src = "/images/scirc/b_viewhisth.gif"
clearHistory = new Image (110,18);
clearHistory.src = "/images/scirc/b_clearhist.gif"
clearHistoryh = new Image (110,18);
clearHistoryh.src = "/images/scirc/b_clearhisth.gif"

reftab = new Image (110,18);
reftab.src = "/images/scirc/t_reference_off.gif"
reftabh = new Image (110,18);
reftabh.src = "/images/scirc/t_reference_over.gif"
magstab = new Image (110,18);
magstab.src = "/images/scirc/t_mags_off.gif"
magstabh = new Image (110,18);
magstabh.src = "/images/scirc/t_mags_over.gif"
journalstab = new Image (110,18);
journalstab.src = "/images/scirc/t_journals_off.gif"
journalstabh = new Image (110,18);
journalstabh.src = "/images/scirc/t_journals_over.gif"
newstab = new Image (110,18);
newstab.src = "/images/scirc/t_news_off.gif"
newstabh = new Image (110,18);
newstabh.src = "/images/scirc/t_news_over.gif"
primdocstab = new Image (110,18);
primdocstab.src = "/images/scirc/t_primdocs_off.gif"
primdocstabh = new Image (110,18);
primdocstabh.src = "/images/scirc/t_primdocs_over.gif"
multimediatab = new Image (110,18);
multimediatab.src = "/images/scirc/t_multimedia_off.gif"
multimediatabh = new Image (110,18);
multimediatabh.src = "/images/scirc/t_multimedia_over.gif"
websitestab = new Image (110,18);
websitestab.src = "/images/scirc/t_websites_off.gif"
websitestabh = new Image (110,18);
websitestabh.src = "/images/scirc/t_websites_over.gif"

email = new Image (110,18);
email.src = "/images/scirc/i_email.gif"
emailh = new Image (110,18);
emailh.src = "/images/scirc/i_email.gif"
prrint = new Image (110,18);
prrint.src = "/images/scirc/i_print.gif"
prrinth = new Image (110,18);
prrinth.src = "/images/scirc/i_print.gif"

send = new Image (110,18);
send.src = "/images/scirc/b_send.gif"
sendh = new Image (110,18);
sendh.src = "/images/scirc/b_sendh.gif"

biosonly = new Image();
biosonly.src = "/images/scirc/b_biosonly.gif"
biosonlyh = new Image();
biosonlyh.src = "/images/scirc/b_biosonlyh.gif"

expandresults = new Image();
expandresults.src = "/images/scirc/b_expandresults.gif"
expandresultsh = new Image();
expandresultsh.src = "/images/scirc/b_expandresultsh.gif"



function img_act(tag)
{
    document [tag].src = eval(tag + "h.src");
}

function img_inact(tag)
{
    document [tag].src = eval(tag + ".src");
}

function isEmpty(value)
{
    return (value.length <= 0);
}

function validateBasicSearch()
{
    if ( isEmpty(document.basicSearch.bi.value) )
    {
        alert("Please enter a search type.");
        document.basicSearch.bi.focus();
        return false;
    }
    if ( isEmpty(document.basicSearch.bt.value) )
    {
        alert("Please enter a search term(s).");
        document.basicSearch.bt.focus();
        return false;
    }
    if ( document.basicSearch.bt.value.indexOf("*") > 0
        || document.basicSearch.bt.value.indexOf("?") > 0
        || document.basicSearch.bt.value.indexOf("!") > 0 )
    {
        alert("Truncation Characters (*, ?, !) are not allowed in Basic Search. Use Advanced Search instead.");
        document.basicSearch.bt.focus();
        return false;
    }

    return true;
}

function submitBasicSearch()
{
    if (validateBasicSearch())
        document.basicSearch.submit();
}

function popupWindow(loc) {
    xPosition=0;
    yPosition=0;
    width = 640;
    height = 500;

    if ( parseInt(navigator.appVersion) >= 4 ) {
        xPosition = (screen.width - width) / 2;
        yPosition = (screen.height - height) / 2;
    }

    args = "location=0,menubar=0,resizable=0,"
         + "scrollbars= 1,status=0,titlebar=0,toolbar=0,hotkeys=0,"
         + "width=" + width  + ","
         + "height=" + height + " ,"
         + "screenx=" + xPosition  + ","
         + "screeny=" + yPosition + " ,"
         + "left=" + xPosition + ","
         + "top=" + yPosition;

    window.open(loc, "occupationList", args);
}

function selectOccupation( occupation )
{
    window.opener.document.personSearch.po.value="\"" + occupation + "\"";
    window.opener.document.personSearch.poDisabled.value="\"" + occupation + "\"";
    window.opener.document.personSearch.pn.focus();
    self.close();
}

function clearOccupation()
{
    document.personSearch.po.value="";
    document.personSearch.poDisabled.value="";
    document.personSearch.pn.focus();
    return;
}

function googleImageLink(searchTerm, baseUrl)
{
    var src = baseUrl + "&m=" + searchTerm;
    if ( document.implementation && document.implementation.createDocument)
    {
      var xmlDoc = document.implementation.createDocument("","",null);
      xmlDoc.load(src);
    } else if (window.ActiveXObject) {
      var xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
      xmlDoc.load(src);
    }

    xPosition=0;
    yPosition=0;
    width = 640;
    height = 500;

    if ( parseInt(navigator.appVersion) >= 4 ) {
        xPosition = (screen.width - width) / 2;
        yPosition = (screen.height - height) / 2;
    }

    url = "http://images.google.com/images?safe=active&q=" + searchTerm;
    args = "location=0,menubar=0,resizable=1,"
         + "scrollbars= 1,status=0,titlebar=0,toolbar=0,hotkeys=0,"
         + "width=" + width  + ","
         + "height=" + height + " ,"
         + "screenx=" + xPosition  + ","
         + "screeny=" + yPosition + " ,"
         + "left=" + xPosition + ","
         + "top=" + yPosition;

    window.open(url, "googleImageSearch", args);

    return;
}

function unitedStreamingLink(searchTerm, baseUrl)
{
    var src = baseUrl + "&m=" + searchTerm;
    if ( document.implementation && document.implementation.createDocument)
    {
      var xmlDoc = document.implementation.createDocument("","",null);
      xmlDoc.load(src);
    } else if (window.ActiveXObject) {
      var xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
      xmlDoc.load(src);
    }

    xPosition=0;
    yPosition=0;
    width = 640;
    height = 500;

    if ( parseInt(navigator.appVersion) >= 4 ) {
        xPosition = (screen.width - width) / 2;
        yPosition = (screen.height - height) / 2;
    }
   url = "http://search.discoveryeducation.com/index.cfm?blnSearchInit=true&Ntk=all&Nr=&N=0&Nty=1&Ntt=" + searchTerm;
   remote = window.open("","galeChildWindow","alwaysRaised=yes,width=720,height=520,screenX=50,screenY=50,top=50,left=50,resizable=yes,scrollbars=yes,toolbar=yes,menubar=no,status=no");
	    remote.location.href=url;
		if (remote.opener == null)
			{
			remote.opener = window;
			}
		else
			{
			remote.focus();
			}

    return;
}

function markAllDocuments()
{
    alert("This feature is not yet implemented");
}





function validateAdvancedSearch()
{
    if (isEmpty(document.advancedSearch.at1.value)
        && isEmpty(document.advancedSearch.at2.value)
        && isEmpty(document.advancedSearch.at3.value)
        && isEmpty(document.advancedSearch.afy.value)
        && isEmpty(document.advancedSearch.afm.value)
        && isEmpty(document.advancedSearch.aty.value)
        && isEmpty(document.advancedSearch.atm.value)
        && isEmpty(document.advancedSearch.ad.value)
    
        )
    {
        alert("You must enter search criteria.");
        document.advancedSearch.at1.focus();
        return false;
    }
    else
    {
        return true;
    }
}

function clearAdvancedSearchForm()
{
    document.advancedSearch.at1.value='';
    document.advancedSearch.at2.value='';
    document.advancedSearch.at3.value='';
    document.advancedSearch.ai1.options[0].selected=true;  // Title
    document.advancedSearch.ai2.options[1].selected=true;  // Source
    document.advancedSearch.ai3.options[6].selected=true;  // Doc Number
    document.advancedSearch.ao1.options[0].selected=true;
    document.advancedSearch.ao2.options[0].selected=true;
    document.advancedSearch.afm.options[0].selected=true;
    document.advancedSearch.afd.options[0].selected=true;
    document.advancedSearch.afy.options[0].selected=true;
    document.advancedSearch.atm.options[0].selected=true;
    document.advancedSearch.atd.options[0].selected=true;
    document.advancedSearch.aty.options[0].selected=true;
    document.advancedSearch.ad.options[0].selected=true;
    
    document.advancedSearch.alf.checked=false;
    document.advancedSearch.ali.checked=false;
    document.advancedSearch.alp.checked=false;
    document.advancedSearch.n.options[0].selected=true;
    document.advancedSearch.at1.focus();
}



function validatePublicationSearch()
{
    var title = document.publicationSearch.ut.value;
    title = title.replace(/\s*$/, "").toLowerCase();
    
    if(isEmpty(title))
    {
        alert("Please enter a search term(s).");
    }
    else if(document.publicationSearch.uto[1].checked
            && (title == "a" || title == "an" || title == "the"))
    {
        alert("Leading articles (a, an, the) are not allowed in Publication Search using the 'Title contains' option. Use a different search term or select the 'Title starts with' option instead.");
    }
    else
    {
        return true;
    }
    
    document.publicationSearch.ut.focus();
    return false;
    
}

function submitPublicationSearch()
{
    if (validatePublicationSearch())
        document.publicationSearch.submit();
}