/**
 * @author mmolist
 */
var versioAjax;


function evaluaVersioAjax() {
	
	if(!versioAjax)
		introduirCookie("carrerer");
	else
		borrarCookie("carrerer");
	
	
	}
	
 function borrarCookie(nom) {   
    document.cookie = nom + "=; expires=" + caduca(-1) + "; path=/"  
} 


function agafaValorCookie(index) {   

    var cook = document.cookie  
    var fiStr = cook.indexOf(";", index)   

    if (fiStr == -1)   
        fiStr = cook.length  
  
    return unescape(cook.substring(index, fiStr))   
    } 
	
function llegirCookie(nom) {   
    var cook = document.cookie  

    var arg = nom + "="  
    var alen = arg.length          
    var glen = cook.length      
  
    var i = 0   
    while (i < glen) {   
        var j = i + alen           
        if (cook.substring(i, j) == arg) 
            return agafaValorCookie(j)  
  
        i = cook.indexOf(" ", i) + 1 
        if (i == 0)   
            break               
    }   
    return null                 
}   

function guardarCookie (nom, valor, caducitat) {   
    if(!caducitat)   
        caducitat = caduca(0)   
    document.cookie = nom + "=" + escape(valor) + "; expires=" + caducitat + "; path=/"  
}

function caduca(dies) {   
    var avui = new Date()                                        
    var msEnXDias = eval(dies) * 24 * 60 * 60 * 1000   
  
    avui.setTime(avui.getTime() + msEnXDias)      
    return (avui.toGMTString())   
}  

function introduirCookie(nom) {   
     
    var _31dies = caduca(31)   
    if (nom != "")    
        guardarCookie("carrerer", nom, _31dies)   
}  

function getIEVersionNumber() {
	var ua = navigator.userAgent;
	var MSIEOffset = ua.indexOf("MSIE ");

	if (MSIEOffset == -1) {
		return 0;
	} 
	else {
		return parseFloat(ua.substring(MSIEOffset + 5, ua.indexOf(";", MSIEOffset)));
	}
}