// GLOBAL FUNCTIONS

//ROLLOVERS
function rollOver(button){
    var obj = document.getElementById(button);
    obj.src = "/images/nav/" + button + "-over.jpg";
}

function rollOff(button){
    var obj = document.getElementById(button);
    obj.src = "/images/nav/" + button + ".jpg";
}

//WINDOW RESIZE
window.onload = function(){
    adjustHeight(document.getElementById('imgTest').height);
}

window.onresize = function(){
    document.getElementById('content').style.height = '';
    
    adjustHeight(document.getElementById('imgTest').height);
}

function adjustHeight(overall){
    //banner - 250
    //banner shadow - 16
    //footer - 50
    
    //total - 316
    
    var divHeight = overall - 316;
    if (document.getElementById('content').offsetHeight < divHeight){
        document.getElementById('content').style.height = divHeight + "px";
    }    
}

// INLINE POPUP
function blackout(vis){
    var zindex = 500;
    var opacity = 75
    var opaque = 0.75;
    var bgcolor = '#000000';
    var dark = document.getElementById("blackout");
    var tbody = document.getElementsByTagName("body")[0];
    if (!dark){
        var tnode = document.createElement("div");
        tnode.style.position='absolute';
        tnode.style.zIndex = zindex;
        tnode.style.top='0px';
        tnode.style.left='0px';
        tnode.style.overflow = 'hidden';
        tnode.style.display = 'none';
        tnode.id='blackout';
        tbody.appendChild(tnode);
        dark = document.getElementById('blackout');
    }
    if (vis){
        tbody.style.overflow = 'hidden';
        var pageWidth = '100%';
        var pageHeight = '3000px';
        dark.style.opacity = opaque;
        dark.style.MozOpacity = opaque;
        dark.style.filter='alpha(opacity='+opacity+')';
        dark.style.zIndex = zindex;
        dark.style.backgroundColor = bgcolor;
        dark.style.width = pageWidth;
        dark.style.height = pageHeight;
        dark.style.display='block';
    }else{                
        tbody.style.overflow = 'auto';
        dark.style.display='none';
    }
}

function showarea(div){
    blackout(true);
    document.getElementById(div).style.display = "inline";
}

function cancel(div){
    document.getElementById(div).style.display = "none";
    blackout(false);
}