var total_font_change = 0;
	var font_size_content = 'bodyContent';
	var font_unit;	
	var font_ori_size ;
	Event.observe(window,'load',start_font_set,false);
	
	var small_size = 'x-small';
	var normal_size = 'small';
	var large_size = 'medium';
	var largest_size = 'large';
	
	function start_font_set(){
		font_ori_size=getCurrentStyle(document.getElementById(font_size_content),'fontSize');
	}
	
	function small_click(){	
		document.getElementById(font_size_content).style.fontSize=small_size;
	}		
	function normal_click(){
		document.getElementById(font_size_content).style.fontSize=normal_size;
		if(document.getElementById("fontSizeDiv")){
			document.getElementById("fontSizeDiv").style.fontSize=small_size;
		}
	}
	function lager_click(){
		document.getElementById(font_size_content).style.fontSize=large_size;
		if(document.getElementById("calendar")){
			document.getElementById("calendar").style.fontSize=normal_size;
		}
		if(document.getElementById("fontSizeDiv")){
			document.getElementById("fontSizeDiv").style.fontSize=small_size;
		}
	}
	function largest_click(){
		document.getElementById(font_size_content).style.fontSize=largest_size;
		
	}
	/*----------根據fontSize設置字體大小(fontSize要帶單位)------------*/
	function setSize_click(fontSizeStr){
		document.getElementById(font_size_content).style.fontSize=fontSizeStr;
		if(document.getElementById("fontSizeDiv")){
			document.getElementById("fontSizeDiv").style.fontSize=small_size;
		}
	}
	function getCurrentStyle(obj, prop) {
		if (obj.currentStyle) {
			return obj.currentStyle[prop];
		}
		else if (window.getComputedStyle) {
			prop = prop.replace (/([A-Z])/g, "-$1");
			prop = prop.toLowerCase ();
			return window.getComputedStyle (obj, "").getPropertyValue(prop);
		}
		return null;
	}