function chRosoImg(obj,n) {
		var sf = '';
		var nn = 0;
		var browser = true;
		if (navigator.userAgent.indexOf ("MSIE 5.5")>0 || navigator.userAgent.indexOf ("MSIE 6")>0)
			{
			browser=false;
			}
		
		
			if (n==1) {
				if(browser==true)
				{sf = 'color.png';}
				else
				{sf = 'color.gif';}
				nn = 8;
			}
			if (n==0) {
				if(browser==true)
				{sf = 'gray.png';}
				else 
				{sf='gray.gif';}
				nn = 9;
			} 

	
		obj.src = obj.src.substr(0,obj.src.length-nn)+sf;
		}
		
		function init()
		{
			a1=new Image; a1.src="{$env.options.site.root_www}themes/{$env.options.site.theme_name}/images/roso_gray.png";
			a2=new Image; a2.src="{$env.options.site.root_www}themes/{$env.options.site.theme_name}/images/roso_color.png";
			a3=new Image; a3.src="{$env.options.site.root_www}themes/{$env.options.site.theme_name}/images/roso_gray.gif";
			a4=new Image; a4.src="{$env.options.site.root_www}themes/{$env.options.site.theme_name}/images/roso_color.gif";
		}
		
		window.onload=init;