function viewPic(img){ 	
    picfile = new Image(); 
    picfile.src =(img); 
    fileCheck(img); 
}

function fileCheck(img){ 	
    if( (picfile.width!=0) && (picfile.height!=0) ){ 
        makeWindow(img); 
    }else{
        funzione="fileCheck('"+img+"')"; 
        intervallo=setTimeout(funzione,50); 
    }
}

function makeWindow(img){ 	
    ht = picfile.height;
	wd = picfile.width;

    var args= "height=" + ht + ",innerHeight=" + ht;
    args += ",width=" + wd + ",innerWidth=" + wd;
    if (window.screen){
        var avht = screen.availHeight; 
        var avwd = screen.availWidth;
        var xcen = (avwd - wd) / 2; 
        var ycen = (avht - ht) / 2;
        args += ",left=" + xcen + ",screenX=" + xcen;
        args += ",top=" + ycen + ",screenY=" + ycen + ",resizable=yes"; 	
    }
    popwin=window.open("","_blank",args)
	popwin.document.open()
	popwin.document.write('<html><head><title>RedTeatral.net - '+img+'</title></head><body bgcolor=white scroll=no topmargin=0 leftmargin=0 rightmargin=0 bottomargin=0 marginheight=0 marginwidth=0><div style="position: absolute; top:0px;left:0px"><a href="javascript:window.close()"><img src="'+img+'" width="'+wd+'" height="'+ht+'" border="0"></a></div></body></html>')
	popwin.document.close()
}

function changeSubmit(){
	var link = document.getElementById("submit_link");
	var img = document.getElementById("submit_img");
	var check_private = document.getElementById("check_private");

	if(check_private.checked == true){
		link.href = "javascript:checkForm();";
		img.src = "images/btn_enviar_head.gif";
	}else{
		link.href = "javascript:alert('Debe aceptar las condiciones de uso y la politica de privacidad');";
		img.src = "images/btn_enviar_head_off.gif";
	}
}

function popup(URL,w,h,vars) {
	
        var left = (screen.width - w) / 2;
        var top  = (screen.height - h) / 2
	
	window.open(URL,"","left="+left+",top=" + top + ",width="+w+",height="+h + vars);
	
}