var fontSize = 0.79;

function zoomIn()
{
	fontSize += 0.2;
	document.body.style.fontSize = fontSize + "em";
}

function zoomOut()
{
	fontSize -= 0.1;
	document.body.style.fontSize = fontSize + "em";
}

function lightup(imageobject, opacity)
{
	if(navigator.appName.indexOf("Microsoft")!= -1 && parseInt(navigator.appVersion) >= 4)
	{
		imageobject.filters.alpha.opacity=opacity;
	}
	else
	{
/*		imageobject.style.MozOpacity=opacity/100; */
		imageobject.style.opacity=opacity/100;
	}
}


function popcc(cc)
{
	var cc = Array.prototype.slice.call(arguments);
	
	lightup(cc[0],15);
	
	for (i = 1;i < cc.length;i++)
	{
			lightup(cc[i],60);

	}
}

function upopcc(cc)
{
	var cc = Array.prototype.slice.call(arguments);
	
	for (i = 1;i < cc.length;i++)
	{
		
			lightup(cc[i],15);

	}
	
	lightup(cc[0],60);
}

function poppcc(cc)
{
	var cc = Array.prototype.slice.call(arguments);
	
	for (i = 1;i < cc.length;i++)
	{
			lightup(cc[i],0);

	}
}

function upoppcc(cc)
{
	var cc = Array.prototype.slice.call(arguments);
	
	for (i = 1;i < cc.length;i++)
	{
		
			lightup(cc[i],15);

	}
	
	lightup(cc[0],60);
}

function setVisibility(id, visibility) {
	document.getElementById(id).style.display = visibility;
}

function validate_search(search)
{
	if(document.search.fd_terms.value == "")
	{
		alert('please enter your search term(s) first');
		document.search.fd_terms.focus();
		return false;
	}
}

var slideMenu=function(){
	var sp,st,t,m,sa,l,w,sw,ot;
	return{
		build:function(sm,sw,mt,s,sl,h){
			sp=s; st=sw; t=mt;
			m=document.getElementById(sm);
			sa=m.getElementsByTagName('li');
			l=sa.length; w=m.offsetWidth; sw=w/l;
			ot=Math.floor((w-st)/(l-1)); var i=0;
			for(i;i<l;i++){s=sa[i]; s.style.width=sw+'px'; this.timer(s)}
			if(sl!=null){m.timer=setInterval(function(){slideMenu.slide(sa[sl-1])},t)}
		},
		timer:function(s){s.onmouseover=function(){clearInterval(m.timer);m.timer=setInterval(function(){slideMenu.slide(s)},t)}},
		slide:function(s){
			var cw=parseInt(s.style.width,'10');
			if(cw<st){
				var owt=0; var i=0;
				for(i;i<l;i++){
					if(sa[i]!=s){
						var o,ow; var oi=0; o=sa[i]; ow=parseInt(o.style.width,'10');
						if(ow>ot){oi=Math.floor((ow-ot)/sp); oi=(oi>0)?oi:1; o.style.width=(ow-oi)+'px'}
						owt=owt+(ow-oi)}}
				s.style.width=(w-owt)+'px';
			}else{clearInterval(m.timer)}
		}
	};
}();