var active= "";

function ITEM_swapClass() {
  var i,x,tB,j=0,tA=new Array(),arg=ITEM_swapClass.arguments;
  
  if(document.getElementsByTagName) {
 	for(i=4;i<arg.length;i++) {
	  tB=document.getElementsByTagName(arg[i]);
      for(x=0;x<tB.length;x++) {tA[j]=tB[x];j++;}
	}
	for(i=0;i<tA.length;i++) {
	  if(tA[i].className) {
		if(tA[i].id==arg[1]) {
		  if(arg[0]==1) {
		     tA[i].className=(tA[i].className==arg[3])?arg[2]:arg[3];}else{tA[i].className=arg[2];
		  }
   		}
  		else if(arg[0]==1 && arg[1]=='none') {
		  if(tA[i].className==arg[2] || tA[i].className==arg[3]) {
			tA[i].className=(tA[i].className==arg[3])?arg[2]:arg[3];
  		  }
  		}
		else if(tA[i].className==arg[2]) {tA[i].className=arg[3];}
 	  }
    }
  }
}

function swapClass(i) {
  if (active != i) {
    ITEM_swapClass(1,'mn' + i,'showit','hideit','div');
    ITEM_swapClass(1,'but' + i,'mnminus','mnplus','img');
  }
  active = i;
}

function resetClasses() {
  ITEM_swapClass(0,'none','showit','hideit','div');
  ITEM_swapClass(0,'none','mnminus','mnplus','img');
  active = "";
}

function ITEM_MultiClass2() { //v1.0
  var args=ITEM_MultiClass2.arguments;
  if(document.getElementById){
  for(var i=0;i<args.length;i+=2){if(document.getElementById(args[i])!=null){
  if(document.item_setdown){for(var k=0;k<item_dco.length-1;k+=2){
  if(args[i]==item_dco[k]){args[i+1]=item_dco[k+1];break;}}}
  document.getElementById(args[i]).className=args[i+1];}}}
}

function closeall() {
	ITEM_swapClass(0,'none','showit','hideit','div');
	ITEM_swapClass(0,'none','mnbutblank','mnplus','img');
	ITEM_swapClass(0,'none','expblank','expandit','img');
	ITEM_swapClass(0,'none','expblank2','expandit2','img');
	ITEM_swapClass(0,'mn0','showit','hideit','div');
	ITEM_swapClass(0,'but0','mnminus','mnplus','img');
	ITEM_MultiClass2('blk1','pblock1','blk2','pblock1','blk3','pblock1')
}


function chklayers() {
	closeall();
}