function P7_swapClass()
{ //v1.4 by PVII
	var i,x,tB,j=0,tA=new Array(),arg=P7_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];
				}
			}
		}
	}
}