// JavaScript Document

var active_tab=1;
var active_trat=1;

function init(){
	
	if(navigator.appName!="Microsoft Internet Explorer"){ /*PNG no admite cambio de opacidad+transparencia parcial en IE*/
		for(i=1; i<6; i++)
			document.getElementById("menu"+i).style.backgroundImage="url('css/tabs.png')"; 		
	}
	changeOpac(80, "menu"+active_tab);
}

function cambiar(id){
   if(id!=active_tab){
	opacity("menu"+active_tab, 80,30,1500);
	active_tab=id;
	opacity("menu"+id, 50, 80, 2000);
	
	var estilo=document.getElementById("section").style;
	switch(id){		
	case '1':
		estilo.height="930px";
		break;
	case '2':	
		estilo.height="750px";
		break;
	case '3':
		estilo.height="500px";		
		break;
	case '4':
		estilo.height="3100px";
		break;
	case '5':
		estilo.height ="1020px";
		break;
	}
   }
}

function cambiarTrat(id){
   if(id!=active_trat){	
		document.getElementById("litrat"+active_trat).style.backgroundImage="url('../css/left.gif')";
		document.getElementById("trat"+active_trat).style.backgroundImage="url('../css/right.gif')";
		document.getElementById("trat"+active_trat).style.paddingBottom='4px'; 
		document.getElementById("trat"+active_trat).style.color='#776678';
		
		document.getElementById("litrat"+id).style.backgroundImage="url('../css/left_on.gif')";
		document.getElementById("trat"+id).style.backgroundImage="url('../css/right_on.gif')";
		document.getElementById("trat"+id).style.paddingBottom='5px'; 
		document.getElementById("trat"+id).style.color='#4F6977';
		
		
		active_trat=id;
   }
}

function opacity(id, opacStart, opacEnd, millisec) {
    
    var speed = Math.round(millisec / 100);
    var timer = 0;

    
    if(opacStart > opacEnd) {
        for(i = opacStart; i >= opacEnd; i--) {
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
            timer++;
        }
    } else if(opacStart < opacEnd) {
        for(i = opacStart; i <= opacEnd; i++)
            {
            setTimeout("changeOpac(" + i + ",'" + id + "')",(timer * speed));
            timer++;
        }
    }
}

function changeOpac(opacity, id) { 
    var object = document.getElementById(id).style;
    object.opacity = (opacity / 100);
    object.MozOpacity = (opacity / 100);
    object.KhtmlOpacity = (opacity / 100);
	object.filter = "alpha(opacity=" + opacity + ")";	
} 

function abrirform(){
	document.getElementById("formcontainer").style.display='block';
	
	/*Opacity de 0 a 0.9*/
	opacity("formcontainer", 1,90,500);
}

function cerrarf(){
	/*Opacity de 0.9 a 0*/
	opacity("formcontainer", 90,1,500);
	setTimeout("ocultaf()",500);
	document.forms[0].reset();
}

function ocultaf(){
	document.getElementById("formcontainer").style.display='none';
}

function initsc(){
	
	if(navigator.appName=="Netscape")
		document.getElementById("tratacont").style.top='217px';
		
	if(navigator.appName=="Microsoft Internet Explorer"){
		
		if (/MSIE (\d+\.\d+);/.test(navigator.userAgent)){ 
		  var ieversion=new Number(RegExp.$1) 
		  if (ieversion<7){
			alert("Esta seccion no soporta Internet Explorer 6. Actualice su IE o acceda con cualquier otro navegador");
			window.parent.location.href="../index.html";
		  }
		}
	}
}