function openwindow(url,ref,windowprop)
{ElementWindow = window.open(url,"Showing","height=405,width=400,top=50,left=15,scrollbars=none")}

function showHideLayerSwitch(layerName)
  {	
    if (eval('document.all'+'["'+layerName+'"]'+'.style.visibility == "visible"'))
    	hideLayer(layerName);
    else
    	showLayer(layerName);
    	
  }
  
var ti=-1;
var tt=1;
var lm='1';


function hide_m(rt)
{          
  if(document.getElementById('t_'+rt)){document.getElementById("t_"+rt).style.visibility= "hidden";}
}

function show_m(rt){

	if(document.getElementById(lm)){document.getElementById(lm).style.visibility= "hidden";}
	if(document.getElementById('t_'+rt)){document.getElementById('t_'+rt).style.visibility= "visible";}
	lm = 't_'+rt;
}

function des()
{
  if(document.getElementById('prc').disabled == true)  {document.getElementById('prc').disabled = false;}
  else	{document.getElementById('prc').disabled = true;}
}