function opentab(selectedtab)
{
	//var selectedtab = selectedtab;
	
	var tabs = document.getElementById('detailtabs').childNodes;
	var contentdivs = document.getElementById('tabdetails').childNodes;
	var tabcount = tabs.length; 
	//var contentdivcount = tabcount;

	// make a clean array of tabs elements
	var aTabs = new Array();
	for(var i=0;i<=tabcount-1;i++) {
		if(tabs[i].tagName == 'LI') {
			aTabs.push(tabs[i]);
		}
	}
	
	//make a clean array of content div elements
	var aContentDivs = new Array();
	for(var i=0;i<=tabcount-1;i++) {
		if(contentdivs[i].tagName == 'DIV') {
			aContentDivs.push(contentdivs[i]);
		}
	}
	
	//now select/unselect tabs and show/hide content divs
	var tabslength = aContentDivs.length;
	for(var i=0;i<=tabslength-1;i++) {
		if(aContentDivs[i].id == selectedtab) {//selected
			aTabs[i].className = 'tabmo'; //select tab
			aContentDivs[i].style.display = 'block'; //open content div
		} else if(aContentDivs[i].id != selectedtab) {//unselected
			aTabs[i].className = 'tab'; //unselect tab
			aContentDivs[i].style.display = 'none'; //close content div
		}
	}	
}