function  opacity_on(this1)	{
	this1.style.cssText = 'filter: alpha(opacity=80); moz-opacity: 0.8; opacity: 0.8; khtml-opacity: 0.8;';
}

function  opacity_off(this1)	{
	this1.style.cssText = 'filter: alpha(opacity=100); moz-opacity: 1.0; opacity: 1.0; khtml-opacity: 1.0;';
}

function changeStyle(path){

	if (path.style.textDecoration == "underline"){
		path.style.textDecoration = "none"
	} else {
		path.style.textDecoration = "underline";
	}
}


function changeViz(div_id){

	obj = document.getElementById("div_"+div_id);
	if (obj.style.display == "block"){
		obj.style.display = "none";
	} else {
		obj.style.display = "block";
	}
}