function preview_sitename(id){
	var username = document.getElementById('username').value;
	//delete non URL characters

	username = username.replace(" ",""); 
	username = username.replace("/",""); 
	username = username.replace("?","");
	username = username.replace("~","");
	username = username.replace("!","");
	username = username.replace("@","");
	username = username.replace("#","");
	username = username.replace("$","");
	username = username.replace("%","");
	username = username.replace("^","");
	username = username.replace("&","");
	username = username.replace("*","");
	username = username.replace("(","");
	username = username.replace(")","");
	username = username.replace("{","");
	username = username.replace("}","");  
	username = username.replace("[","");
	username = username.replace("]","");
	username = username.replace(";","");
	username = username.replace("|","");
	username = username.replace("'","");
	username = username.replace(":","");
	username = username.replace("\"","");
	username = username.replace(",","");
	username = username.replace(".","");
	username = username.replace("<","");
	username = username.replace(">","");
	username = username.replace("`","");
	username = username.replace(" ",""); 
	username = username.replace("/",""); 
	username = username.replace("?","");
	username = username.replace("~","");
	username = username.replace("!","");
	username = username.replace("@","");
	username = username.replace("#","");
	username = username.replace("$","");
	username = username.replace("%","");
	username = username.replace("^","");
	username = username.replace("&","");
	username = username.replace("*","");
	username = username.replace("(","");
	username = username.replace(")","");
	username = username.replace("{","");
	username = username.replace("}","");  
	username = username.replace("[","");
	username = username.replace("]","");
	username = username.replace(";","");
	username = username.replace("|","");
	username = username.replace("'","");
	username = username.replace(":","");
	username = username.replace("\"","");
	username = username.replace(",","");
	username = username.replace(".","");
	username = username.replace("<","");
	username = username.replace(">","");
	username = username.replace("`","");
	username = username.replace(new RegExp(/^\s+/),""); // START
	username = username.replace(new RegExp(/\s+$/),""); // END
	username = username.replace(new RegExp(/^http:\/\//i),"");
	username = username.replace(new RegExp(/^www\./i),"");
	username = username.replace(new RegExp(/\/$/),"");
	username = username.replace(new RegExp(/\/(.*)/),"");
	username = username.replace(new RegExp(/\\/g),"");
	document.getElementById('preview_url').innerHTML = ("http://" + username + ".alyvo.com");

}

function checkifempty(){
	

		var folderid = document.getElementById('folder').value;
	if (folderid > 0){
	document.form1.folder_name.disabled=true;
	document.form1.folder_name.value=("Alleen bij nieuwe folder");
	
	
	}
	else{
	document.form1.folder_name.disabled=false;
	document.form1.folder_name.value=("Vul in....");
	
	
	} 

}