// start system.asp page scripts

function $(id){
	return document.getElementById(id);	
}

function showTabContent(tabId){
	$('tabcontent_op').style.position = 'absolute';
	$('tabcontent_ts').style.position = 'absolute';
	$('tabcontent_img').style.position = 'absolute';
	$('tabcontent_pu').style.position = 'absolute';
	$(tabId).style.position = 'static';
}
function activateTab(tab){
	$('overviewtab').style.backgroundPosition = '0 6px';
	$('techtab').style.backgroundPosition = '0 6px';
	$('imagestab').style.backgroundPosition = '0 6px';
	$('powertab').style.backgroundPosition = '0 6px';
	tab.style.backgroundPosition = '0 0';
}

window.onload = function(){
	$('overviewtab').onclick = function(){
		showTabContent('tabcontent_op');
		activateTab(this);
	}
	$('techtab').onclick = function(){
		showTabContent('tabcontent_ts');
		activateTab(this);
	}
	$('imagestab').onclick = function(){
		showTabContent('tabcontent_img');
		activateTab(this);
	}
	$('powertab').onclick = function(){
		showTabContent('tabcontent_pu');
		activateTab(this);
	}	
}

// end system.asp page scripts