function setCookie(c_name,value,expirehours){
    var exdate = new Date();
    exdate.setHours(exdate.getHours() + expirehours)
	document.cookie=c_name+ "=" +escape(value)+((expirehours==null) ? "" : "; expires="+exdate.toGMTString());
}

function getCookie(c_name) {
	if (document.cookie.length>0)
	  {
	  c_start=document.cookie.indexOf(c_name + "=");
	  if (c_start!=-1)
		{ 
		c_start=c_start + c_name.length+1 ;
		c_end=document.cookie.indexOf(";",c_start);
		if (c_end==-1) c_end=document.cookie.length
		return unescape(document.cookie.substring(c_start,c_end));
		} 
	  }
	return ""
}

function checkFirstTime(){
	if (getCookie("welcome")){
		firstTime = "0";
	}else{
		setCookie('welcome','1',1);
	}
}
var firstTime = "1";
onLoad = checkFirstTime();