function hide(div) {

if (document.getElementById)
    document.poppedLayer = eval('document.getElementById(div)');
else if (document.all)
    document.poppedLayer = eval('document.all[div]');
else
    document.poppedLayer = eval('document.layers[div]');
    document.poppedLayer.style.display = "none";
}

function show(div) {
if (document.getElementById)
    document.poppedLayer = eval('document.getElementById(div)');
else if (document.all)
    document.poppedLayer = eval('document.all[div]');
else
    document.poppedLayer = eval('document.layers[div]');
    document.poppedLayer.style.display = "block";
}

function changeTab(tabName){
	switch(tabName){
		case 'productcontentdecriptioni':
		document.getElementById('productcontentdecriptioni').src = 'images/tab_description_on.png';
		if (document.getElementById('productcontenttechi') != null)
		{
		    document.getElementById('productcontenttechi').src = 'images/tab_technical_off.png';	
		}	
		if (document.getElementById('productcontentimagesi') != null)
		{
		    document.getElementById('productcontentimagesi').src = 'images/tab_images_off.png';
		}
		break;		

		case 'productcontenttechi':
		document.getElementById('productcontentdecriptioni').src = 'images/tab_description_off.png';
		if (document.getElementById('productcontenttechi') != null)
		{
		    document.getElementById('productcontenttechi').src = 'images/tab_technical_on.png';	
		}
		if (document.getElementById('productcontentimagesi') != null)
		{
		    document.getElementById('productcontentimagesi').src = 'images/tab_images_off.png';
		}
		break;			

		case 'productcontentimagesi':
		document.getElementById('productcontentdecriptioni').src = 'images/tab_description_off.png';
		if (document.getElementById('productcontenttechi') != null)
		{
		    document.getElementById('productcontenttechi').src = 'images/tab_technical_off.png';	
		}
		if (document.getElementById('productcontentimagesi') != null)
		{
		    document.getElementById('productcontentimagesi').src = 'images/tab_images_on.png';
		}
		break;
	}

}