function prodTab(d) {
		var dir = d;
		var elem = document.getElementById('prod-tab-thru-img');		
		var txtElem = document.getElementById('prod-tab-txt-in');
		var currentImg = elem.src;				
		var slash = currentImg.lastIndexOf('/') + 1;
		var dot = currentImg.lastIndexOf('.');
		var nom = currentImg.slice(slash,dot); /* 01, 02, etc. */
		
		var ielem = document.getElementById('tabthru-popper');
		var winName = "winT";
		var winParams = "height=500,width=660,menubar=no,toolbar=no,statusbar=no";
		var ocTxt1 = "images/product_tab_thrus/lab/01-big.jpg";
		var ocTxt2 = "images/product_tab_thrus/lab/02-big.jpg";
		var ocTxt3 = "images/product_tab_thrus/lab/03-big.jpg";
		var ocTxt4 = "images/product_tab_thrus/lab/04-big.jpg";
		var ocTxt5 = "images/product_tab_thrus/lab/05-big.jpg";
		var ocTxt6 = "images/product_tab_thrus/lab/06-big.jpg";
		
		var img01 = new Image();
		img01.src = "images/product_tab_thrus/lab/01.jpg";	
		var img02 = new Image();
		img02.src = "images/product_tab_thrus/lab/02.jpg";
		var img03 = new Image();
		img03.src = "images/product_tab_thrus/lab/03.jpg";
		var img04 = new Image();
		img04.src = "images/product_tab_thrus/lab/04.jpg";
		var img05 = new Image();
		img05.src = "images/product_tab_thrus/lab/05.jpg";
		var img06 = new Image();
		img06.src = "images/product_tab_thrus/lab/06.jpg";
		
		var txt01 = "<strong>Lab with Storage Options</strong>";
		var txt02 = "<strong>72&rdquo; Wet Lab</strong> <span class='tab-txt2'><br />Pedestal Base</span>";
		var txt03 = "<strong>Modular Lab</strong> <span class='tab-txt2'><br />Back-to-back Benchmarx Design</span>";
		var txt04 = "<strong>Modular Lab Combo &amp; Casework</strong>";
		var txt05 = "<strong>72&rdquo; Modular Wet Lab</strong>";
		var txt06 = "<strong>72&rdquo; Mobile Cabinet Bench</strong>";
		
		if (dir == 0) {
			if (nom == '01') {
				elem.src = img06.src;
				txtElem.innerHTML = txt06;
				ielem.onclick = function() { window.open(ocTxt6,winName,winParams); return false; };
			}
			else if (nom == '02') {
				elem.src = img01.src;
				txtElem.innerHTML = txt01;
				ielem.onclick = function() { window.open(ocTxt1,winName,winParams); return false; };
			}
			else if (nom == '03') {
				elem.src = img02.src;
				txtElem.innerHTML = txt02;
				ielem.onclick = function() { window.open(ocTxt2,winName,winParams); return false; };
			}
			else if (nom == '04') {
				elem.src = img03.src;
				txtElem.innerHTML = txt03;
				ielem.onclick = function() { window.open(ocTxt3,winName,winParams); return false; };
			}
			else if (nom == '05') {
				elem.src = img04.src;
				txtElem.innerHTML = txt04;
				ielem.onclick = function() { window.open(ocTxt4,winName,winParams); return false; };
			}
			else if (nom == '06') {
				elem.src = img05.src;
				txtElem.innerHTML = txt05;
				ielem.onclick = function() { window.open(ocTxt5,winName,winParams); return false; };
			}
		}		
		else if (dir == 1) {
			if (nom == '01') {
				elem.src = img02.src;
				txtElem.innerHTML = txt02;
				ielem.onclick = function() { window.open(ocTxt2,winName,winParams); return false; };
			}
			else if (nom == '02') {
				elem.src = img03.src;
				txtElem.innerHTML = txt03;
				ielem.onclick = function() { window.open(ocTxt3,winName,winParams); return false; };
			}
			else if (nom == '03') {
				elem.src = img04.src;
				txtElem.innerHTML = txt04;
				ielem.onclick = function() { window.open(ocTxt4,winName,winParams); return false; };
			}
			else if (nom == '04') {
				elem.src = img05.src;
				txtElem.innerHTML = txt05;
				ielem.onclick = function() { window.open(ocTxt5,winName,winParams); return false; };
			}
			else if (nom == '05') {
				elem.src = img06.src;
				txtElem.innerHTML = txt06;
				ielem.onclick = function() { window.open(ocTxt6,winName,winParams); return false; };
			}
			else if (nom == '06') {
				elem.src = img01.src;
				txtElem.innerHTML = txt01;
				ielem.onclick = function() { window.open(ocTxt1,winName,winParams); return false; };
			}
		}
	}