var NS4 = (document.layers) ? 1 : 0;
var IE = (document.all) ? 1 : 0;
var DOM = (document.getElementById) ? 1 : 0;

function panelswitch(paneid, tabid) {

	var oldTab = 'tab_' + paneid + '_' + currentTabs[paneid];

	var cssStyleUnselected = 'tab_unselected';
	var cssStyleSelected = 'tab_selected';
	
						
	if (DOM) {
		//document.getElementById(oldTab).className=cssStyleUnselected;
	} else {
		if (IE) {
			//document.all[oldTab].className=cssStyleUnselected;
		}
	}
		
	currentTabs[paneid] = tabid;
	var newTab = 'tab_' + paneid + '_' + tabid;
	
	if (DOM) {
		//document.getElementById(newTab).className=cssStyleSelected;
	} else {
		if (IE) {
			//document.all[newTab].className=cssStyleSelected;
		}
	}

	var iframeID = 'iframe_' + paneid;
	//alert(panelURLs[paneid][tabid]);
	
	window.frames[iframeID].location.replace(panelURLs[paneid][tabid]);
	return;
}

function rollon(paneid, tabid) {
	
	if (tabid != currentTabs[paneid]) {
		var newTab = 'tab_' + paneid + '_' + tabid;
		cssStyleRollon = 'tab_rollon';
	
		if (DOM) {
			//document.getElementById(newTab).className=cssStyleRollon;
		} else {
			if (IE) {
				//document.all[newTab].className=cssStyleRollon;
			}
		}

		return;
	}

}


function rolloff(paneid, tabid) {

	if (tabid != currentTabs[paneid]) {
		var newTab = 'tab_' + paneid + '_' + tabid;
		cssStyleUnselected = 'tab_unselected';
	
		if (DOM) {
			//document.getElementById(newTab).className=cssStyleUnselected;
		} else {
			if (IE) {
				//document.all[newTab].className=cssStyleUnselected;
			}
		}

		return;
	}

}