var currentSection = "";
var submitted = false;

//Function to handle layer switching with tabs
function loadDiv(newSelected)
{	
	if(currentSection.length > 0)
	{
		var oldTab = document.getElementById(currentSection+"Tab");
		var oldLayer = document.getElementById(currentSection+"Layer");
		oldTab.className = "";
		oldLayer.style.display="none";
	}
	currentSection = newSelected;
	var tab = document.getElementById(newSelected+"Tab");
	var layer = document.getElementById(newSelected+"Layer");
	tab.className="selectedTab";
	layer.style.display="block";
	tab.blur();
	return false;
		
}

//before adding to cart, make sure options that need to be selected are selected.  
function checkOptions()
{
	var optionSelect = document.getElementById("optionSelect");
	if(optionSelect!=null&&optionSelect.options[optionSelect.selectedIndex].value=="-1")
	{						
		alert('Please choose an option from the drop-down list');
		return false;
	}
	else if(submitted == false)
	{
/* 		if(window.event.srcElement != document.getElementById('addToCartButton'))
			document.getElementById('shoppingForm').submit(); */
		submitted = true;
		return true;
	}
	else
	{	return false;	}
}

//general popup function for closup and wiring diagrams etc.  simplifies window.open js command to width, height.
function popUp(URL, width, height) 
{
	day = new Date();
	id = day.getTime();
	eval("page"+id+"=window.open(URL,'"+id+"','toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=1,width="+width+",height="+height+",left=200,top= 200');");
}

function swapImage(select, part_number)
{
	if(select.options[select.selectedIndex].text=='Black')
		makeBlack(part_number);
	else
		makeSilver(part_number);
		
}

function makeBlack(part_number)
{
	if(part_number.indexOf('-SIL')!=-1)
		part_number = part_number.substring(0, part_number.indexOf('-SIL'));
	document.getElementById('topImageImg').src='/images/'+part_number.toLowerCase() +'-blk.jpg';
	
}
function makeSilver(part_number)
{	document.getElementById('topImageImg').src='/images/'+part_number.toLowerCase()+'.jpg';	}