/* START font.js */
var Font =
{
	current:13,
	baseSize:9,
	heightDiff:undefined,
	buttonSmall:undefined,
	buttonMedium:undefined,
	buttonLarge:undefined,
	elem:undefined,
	increase:function(elem)
	{
		this.current=this.checkInt(Cookies.gc('fs'),this.current);
		this.current+=(this.current>=18?0:1);
		this.setSize(elem,this.current);
		Cookies.ac('fs',this.current,1440,document.domain);
	},
	decrease:function(elem)
	{
		this.current=this.checkInt(Cookies.gc('fs'),this.current);
		this.current-=(this.current<=9?0:1);
		this.setSize(elem,this.current);
		Cookies.ac('fs',this.current,1440,document.domain);
	},
	initFont:function(small, medium, large, elemName)
	{
	    this.buttonSmall = {top:document.getElementById(small[0]), bottom:document.getElementById(small[1]), size:small[2]};
		this.buttonMedium = {top:document.getElementById(medium[0]), bottom:document.getElementById(medium[1]), size:medium[2]};
		this.buttonLarge = {top:document.getElementById(large[0]), bottom:document.getElementById(large[1]), size:large[2]};
		this.elem = document.getElementById(elemName);
		var previousSize = Cookies.gc('fontSize');

		if(previousSize != undefined)
			this.setSize(previousSize);
		else	//default to medium
			this.setSize(this.buttonMedium.size);
	},
	setSize:function(v,ev)
	{
		var ccol = document.getElementById("contentcol");
		if(ccol != undefined && ev != undefined && this.heightDiff == undefined)
		{
		    this.heightDiff = ccol.offsetHeight - this.elem.offsetHeight;
		}
		if(this.elem != undefined && this.elem.style)
		{
			v = this.checkInt(v, this.current);
			var curSize = this.current;

			if(this.elem.currentStyle) //for IE
				curSize = parseInt(this.elem.currentStyle.fontSize);
			else if(window.getComputedStyle) //for firefox
				curSize = parseInt(window.getComputedStyle(this.elem, "").getPropertyValue("font-size"));

			if(isNaN(curSize)) curSize = this.current;
			this.baseSize = curSize;
			this.applyToChildren(this.elem, v - curSize);
		}
		var rcol = document.getElementById("rghtcol");
		var lcol = document.getElementById("lftcol");;
		if(rcol != undefined && lcol != undefined && ccol != undefined && this.elem != undefined)
		{
			ccol.style.overflow = "visible";
			lcol.style.height=rcol.style.height=ccol.style.height=this.elem.offsetHeight+this.heightDiff;
			ccol.style.overflow = "hidden";
		}
		
		if(ev != undefined)
		{
			Cookies.ac('fontSize',v,525600,"ninemsn.com.au");
			var e=ev.srcElement?ev.srcElement:ev.target;
			var srcId = e.id;
			this.setSelectedClass(this.buttonSmall, srcId);
			this.setSelectedClass(this.buttonMedium, srcId);
			this.setSelectedClass(this.buttonLarge, srcId);
		}
		else
		{
			this.setStoredClass(this.buttonSmall, v);
			this.setStoredClass(this.buttonMedium, v);
			this.setStoredClass(this.buttonLarge, v);
		}
	},
	applyToChildren:function(elem, v)
	{
		if(elem != undefined && elem.style)
		{
			//set to current element
			var curSize = this.current;
			if(elem.currentStyle) //for IE
				curSize = parseInt(elem.currentStyle.fontSize);
			else if(window.getComputedStyle) //for firefox
				curSize = parseInt(window.getComputedStyle(elem, "").getPropertyValue("font-size"));

			if(isNaN(curSize)) curSize = this.current;
			/*if(elem.parentElement.style.fontSize != "" && elem.style.fontSize == "")
				elem.style.fontSize = (parseInt(elem.parentElement.style.fontSize) + (curSize - this.baseSize)) + "px";
			else
			*/
			elem.style.fontSize = (parseInt(curSize + v) >= 9) ? parseInt(curSize + v) + "px" : "9px";

			//go through all children and apply to them
			//for(var currentElem = elem.firstChild; currentElem != undefined; currentElem = currentElem.nextSibling)
			//	this.applyToChildren(currentElem, v);
		}
	},
	checkInt:function(i, dv)
	{
		if(!dv) dv = 0;
		var iv = parseInt(i);
		return (iv.toString() == "NaN" ? dv : iv);
	},
	setSelectedClass:function(btnSet, srcId)
	{
		if((btnSet.top != undefined && btnSet.top.id == srcId) || (btnSet.bottom != undefined && btnSet.bottom.id == srcId))
		{
			if(btnSet.top != undefined) btnSet.top.className = "selected";
			if(btnSet.bottom != undefined) btnSet.bottom.className = "selected";
		}
		else
		{
			if(btnSet.top != undefined) btnSet.top.className = "";
			if(btnSet.bottom != undefined) btnSet.bottom.className = "";
		}
	},
	setStoredClass:function(btnSet, size)
	{
		if(btnSet.size == size)
		{
			if(btnSet.top != undefined) 
                                                  btnSet.top.className = "selected";
			if(btnSet.bottom != undefined)  
                                                  btnSet.bottom.className = "selected";
		}
                                return;
	}
}
/* END font.js */