function doheight1(addition) {
 var m=0;
 var otr=parseInt(document.getElementById('right1').offsetTop);
 var otl=parseInt(document.getElementById('left1').offsetTop);
 var otc=parseInt(document.getElementById('center1').offsetTop);
 var r=parseInt(document.getElementById('right1').offsetHeight)+otr;
 var l=parseInt(document.getElementById('left1').offsetHeight)+otl;
 var c=parseInt(document.getElementById('center1').offsetHeight)+otc;
 if(m<r){m=r;}
 if(m<l){m=l;}
 if(m<c){m=c;}
 document.getElementById('left1').style.height=(m-otl+addition)+'px';
 document.getElementById('right1').style.height=(m-otr+100+addition)+'px';
 document.getElementById('center1').style.height=(m-otc+100+addition)+'px';
}

function doheight2(addition) {
 var m=0;
 var otr=parseInt(document.getElementById('right1').offsetTop);
 var otc=parseInt(document.getElementById('center1').offsetTop);
 var r=parseInt(document.getElementById('right1').offsetHeight)+otr;
 var c=parseInt(document.getElementById('center1').offsetHeight)+otc;
 if(m<r){m=r;}
 if(m<c){m=c;}
 document.getElementById('right1').style.height=(m-otr+20+addition)+'px';
 document.getElementById('center1').style.height=(m-otc+20+addition)+'px';
}
/* needed for IE6 only */
function minwidth () {
	if (document.body.clientWidth < 1000) { document.body.style.width = "1000px"; }
}

var submenu_active_id = 1;
var submenu_prefix = "submenu";

function submenu_show (id, menuid) {
	document.getElementById(submenu_prefix+submenu_active_id).className="menu" + menuid + "-sub";
	document.getElementById(submenu_prefix+id).className="menu" + menuid + "-sub active";
	submenu_active_id = id;
/*	this.blur(); */
	return false;	
}

function set_image (src, id) {
	document.getElementById(id).src = src;
}

var tab_active_id = 1;
function activatetab(id) {
	document.getElementById("tab"+tab_active_id).className = "";
	tab_active_id = id;
	document.getElementById("tab"+id).className='active';
	var childlink = document.getElementById("tab"+id).getElementsByTagName('a');
	childlink[0].blur();
	return false;
}