// declare global vars
var original_headings = new Array();
var h; // for h3 headings
var h4text; // h4 heading
var isMac; 
var blurbOk;
var clickShowOk;

clickShowOk = (document.getElementById && document.styleSheets && document.styleSheets[0].href) ? 1:0;
// write in stylesheet for portfolio page click and show if the browser can cope with it
if (clickShowOk){
	            document.write('<link rel="stylesheet" type="text/css" href="/css/clickInstructions.css">');
}

function init(){
// check the dhtml functionality for the blurbs at left 
isMac = (navigator.userAgent.indexOf('Mac')!=-1) ? 1:0;
blurbOk = (document.getElementById  && document.createTextNode && document.getElementById("msoverinfo").innerHTML) ? 1:0;

// get the h4 heading which will be used for the WinIE mouseovers
if (blurbOk)
           {
	        h4text = document.getElementById("msoverinfo").getElementsByTagName("h4").item(0).firstChild.nodeValue;
		   }
}