function show_popup(show){
//alert(document.cookie);	
	if(show == 1) {
 		var check;
		check = 0;  
		if(document.cookie == 'aim_pop'){
			check = 1;
		}
		if(check == 0 ){
			datum = new Date();			 
			datum.setTime(datum.getTime()+(1000*60*60));			
			document.cookie = "aim_pop;expires="+datum.toGMTString();
			document.getElementById("popup").style.display = "block";
			document.getElementById("popup").style.visibility= "visible";
 		}	
 	}else {
  		document.getElementById("popup").style.display = "none";
 		document.getElementById("popup").style.visibility= "hidden";
 	}	
}