//detailed
function toggleVis(element,vis,collapse){
	if(document.getElementById||document.all){
		if(document.getElementById&&!document.all){// NS6+
			var element=eval(document.getElementById(element));
		}else{// IE4+
			var element=eval(element);
		}
		if(vis=='hidden'||vis==false){
			element.style.visibility='hidden';
			if(collapse) element.style.position='absolute';
		}else if(vis=='visible'||vis==true){
			if(collapse) element.style.position='relative';
			element.style.visibility='visible';
		}else{
			if(element.style.visibility=='visible'){
				element.style.visibility='hidden';
				if(collapse) element.style.position='absolute';
			}else{
				if(collapse) element.style.position='relative';
				element.style.visibility='visible';
			}
		}
	}
}
//no collapse
function togVis(element,vis){
	toggleVis(element,vis,false);
}
//quick
function tVis(element){
	toggleVis(element,null,false);
}