function Pview(N){
if((navigator.appVersion.charAt(0)>=5) && (navigator.platform.charAt(0) != "M")  || (navigator.platform.charAt(0) == "M") && (navigator.appVersion.charAt(0)>=5)){

H = new Array('p1', 'p2', 'p3', 'p4', 'p5', 'p6', 'p7');
var i;
 for(i=0; i<7; i++){
  document.getElementById(H[i]).style.display='none';
 }
 if(N != 'close'){
  document.getElementById(N).style.display='block';
 }

}
}