// open browser window
function openPopUp(url, windowName, w, h, scrollbar) {

           var winl = (screen.width - w) / 2;
           var wint = (screen.height - h) / 2;
           winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scrollbar ;
		   win = window.open(url, windowName, winprops);
           if (parseInt(navigator.appVersion) >= 4) {
              	win.window.focus(); 
           }
}

function showbox(id,action){
	if(action == 'hide'){
        if (document.getElementById){
			obj = document.getElementById(id);
			obj.style.display = "none";
		}
	}
	else if(action == 'show'){
        if (document.getElementById){
			obj = document.getElementById(id);
			obj.style.display = "";
		}
	}
}
// Hide or show a section of html content
function showhide(id){
	if (document.getElementById){
		obj = document.getElementById(id);
		if (obj.style.display == "none"){
			obj.style.display = "";
		}
		else {
			obj.style.display = "none";
		}
	}
}