function spanVis(id,vis){
	if(document.getElementsByTagName){
		var spans=document.getElementsByTagName("SPAN");
		for(i=0;i<spans.length;i++){
			if(spans[i].id==id) spans[i].style.visibility=vis;
		}
	}
}
function toggleVisibility(element,vis,collapse){
	if(document.getElementById||document.all){
		if(document.getElementById&&!document.all){// NS6+
			element=eval(document.getElementById(element));
		}else{// IE4+
			element=eval(element);
		}
		if(vis=='hidden'){
			element.style.visibility='hidden';
			if(collapse) element.style.position='absolute';
		}else if(vis=='visible'){
			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';
			}
		}
	}
}