<!--
var forPrint=false;function changeSheet()
{
    if(document.styleSheets)
    {
        var sheets = document.styleSheets;
       
        if(!forPrint)
        {
            document.styleSheets[0].disabled=false;
            appendmediae('screen');
            document.styleSheets[1].disabled=true;
				try { document.styleSheets[2].disabled=true; }
				catch(e) {}
            forPrint=true;
        }
        else
        {
            document.styleSheets[1].disabled=false;
            deletemediae('print');
            document.styleSheets[0].disabled=true;
				try { document.styleSheets[2].disabled=false; }
				catch(e) {}				
            forPrint=false;
        }
    }
}

function appendmediae(oType)
{
    if(!document.styleSheets)
        return;
    
    if(!document.styleSheets.length)
        return;
    
    if(!document.styleSheets[0].media.appendMedium)
	 {
	 	document.styleSheets[0].media+=", "+oType;return;
	}
	try
	{
		document.styleSheets[0].media.appendMedium(oType);
	}
	catch(e)
	{}
}

function deletemediae(oType){if(!document.styleSheets){return;}
if(!document.styleSheets.length){return;}
if(!document.styleSheets[0].media.deleteMedium){return;}
try
{document.styleSheets[0].media.deleteMedium(oType);}
catch(e)
{}}