var activ_prd_info = 'info';

function showProductInfo(elem,color) {
	document.getElementById('prd_'+activ_prd_info).style.display = 'none';
	document.getElementById('prd_'+elem).style.display = 'block';
	
	document.getElementById('prd_nav_'+activ_prd_info).style.backgroundColor = '#cccccc';
	document.getElementById('prd_nav_'+elem).style.backgroundColor = color;
	activ_prd_info = elem;

}