function tagchg(param) {

	for (i = 1; i <= 2; i++) {

		if(document.all){
			obj = document.all('tag'+ i ).style;
		}else if(document.getElementById){
			obj = document.getElementById('tag'+ i ).style;
		}
			
		if( i == param ){
			obj.display = "block";
		}else{
			obj.display = "none";
		
		}

	}
}