function switchTag(tab,content,part)
{
	
	if(part=="p4")
	{
		tabnum=4;
	}
	else{
		tabnum=4;
	}
	
	for(i=1; i <= tabnum; i++)
	{
		if (part+"_dst"+i==part+"_"+tab)
		{
			document.getElementById(part+"_"+tab).className="showtab";
		}else{
			document.getElementById(part+"_dst"+i).className="";
		}
		if (part+"_dsc"+i==part+"_"+content)
		{
			document.getElementById(part+"_"+content).className="showdsc";
		}else{
			document.getElementById(part+"_dsc"+i).className="hidden";
		}
		//document.getElementById("c_panel").className=content;
	}
}