function calcvols(form) {  
	var length = parseFloat(form.length.value);  
	var width = parseFloat(form.width.value);  
	var depth = parseFloat(form.depth.value);  
	
	var result = Math.round(depth*length*width);
	
	
	
	form.vol.value = parseInt(result);
	form.fm_concreq.value = parseInt(result);
	

	
	document.cookie="volume="+form.vol.value;
	
}