pageSize="large";
function find_size() {
	ie = (document.all)?true:false
    	if (ie) {
    		page_width=document.body.clientWidth;
    		page_height=document.body.clientHeight;
    	} else {
    		page_width=innerWidth-20;
    		page_height=innerHeight;
    	}
    	if (page_width<760) {
    		styleLink=document.getElementById('mainstyle');
    		styleLink.href="main_narrow.css";
    		pageSize="small";
    	}
}

pdOn=1;
function swapImgOn2(id) {
        var offId="pd_"+pdOn;
        var onId="pd_"+id;
        theOffId=document.getElementById(offId);
        theOffId.className="hiddendata";
        theOnId=document.getElementById(onId);
        theOnId.className="";
        pdOn=id;
}