function pageaction(str,defaultlocation){
   var ls = location.search;
   var lh = location.href; 
   var ind=lh.indexOf(".cfm");
   var cfm = '';
	if (location.pathname.length > 1)
	{
   
	   if(ind==-1){cfm='index.cfm?'}
		if(ls==''){ls=cfm+''};
			var index=ls.indexOf("page_action=");
			var pos=index+5;
			var car1=ls.charAt(pos);
			var car2=ls.charAt(pos+1);
			var car = car1+car2;
		 if (index==-1){//geen lang= in url
		  location.search=ls+"&page_action="+str;
		 }else{
		  car="="+car;
		  str="="+str;
		  location.search=ls.replace(car,str) ;
		 };
	}
	else
	{
		 location.href=defaultlocation+'?page_action='+str;
	};
}